Home / 1,131,445.80-1,697,130.30-290,005.80

Finding the Fourth Proportional to 1,131,445.80, 1,697,130.30 and 290,005.80

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Solution

The fourth proportional to 1,131,445.80, 1,697,130.30 and 290,005.80 is: 434,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,445.80 : 1,697,130.30 = 290,005.80 : x
  2. Step 2: Convert to fraction form
    1,131,445.80/1,697,130.30 = 290,005.80/x
  3. Step 3: Cross multiply
    1,131,445.80x = 1,697,130.30 × 290,005.80
  4. Step 4: Simplify right side
    1,131,445.80x = 492,177,630,355.74
  5. Step 5: Solve for x
    x = 492,177,630,355.74/1,131,445.80
  6. Step 6: Final answer
    x = 434,998.86

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.