Home / 783,421.60-1,175,521.20-446,720.80

Finding the Fourth Proportional to 783,421.60, 1,175,521.20 and 446,720.80

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Solution

The fourth proportional to 783,421.60, 1,175,521.20 and 446,720.80 is: 670,302.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,421.60 : 1,175,521.20 = 446,720.80 : x
  2. Step 2: Convert to fraction form
    783,421.60/1,175,521.20 = 446,720.80/x
  3. Step 3: Cross multiply
    783,421.60x = 1,175,521.20 × 446,720.80
  4. Step 4: Simplify right side
    783,421.60x = 525,129,770,880.96
  5. Step 5: Solve for x
    x = 525,129,770,880.96/783,421.60
  6. Step 6: Final answer
    x = 670,302.90

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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.