Home / 712,941.70-1,069,412.55-447,520.90

Finding the Fourth Proportional to 712,941.70, 1,069,412.55 and 447,520.90

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Solution

The fourth proportional to 712,941.70, 1,069,412.55 and 447,520.90 is: 671,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,941.70 : 1,069,412.55 = 447,520.90 : x
  2. Step 2: Convert to fraction form
    712,941.70/1,069,412.55 = 447,520.90/x
  3. Step 3: Cross multiply
    712,941.70x = 1,069,412.55 × 447,520.90
  4. Step 4: Simplify right side
    712,941.70x = 478,584,466,847.30
  5. Step 5: Solve for x
    x = 478,584,466,847.30/712,941.70
  6. Step 6: Final answer
    x = 671,281.35

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Double scale
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Similar ratio
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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.