Home / 1,385,435,189.07-1,911,175,705.40-856,630,136.43

Finding the Fourth Proportional to 1,385,435,189.07, 1,911,175,705.40 and 856,630,136.43

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Solution

The fourth proportional to 1,385,435,189.07, 1,911,175,705.40 and 856,630,136.43 is: 1,181,701,401.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,435,189.07 : 1,911,175,705.40 = 856,630,136.43 : x
  2. Step 2: Convert to fraction form
    1,385,435,189.07/1,911,175,705.40 = 856,630,136.43/x
  3. Step 3: Cross multiply
    1,385,435,189.07x = 1,911,175,705.40 × 856,630,136.43
  4. Step 4: Simplify right side
    1,385,435,189.07x = 1,637,170,705,254,220,288
  5. Step 5: Solve for x
    x = 1,637,170,705,254,220,288/1,385,435,189.07
  6. Step 6: Final answer
    x = 1,181,701,401.96

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Double scale
Find fourth proportional to 1,385,435,190.07, 1,911,175,706.77 and 856,630,137.43
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.