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Finding the Fourth Proportional to 619,240.80, 927,478.80 and 478,543.20

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Solution

The fourth proportional to 619,240.80, 927,478.80 and 478,543.20 is: 716,746.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,240.80 : 927,478.80 = 478,543.20 : x
  2. Step 2: Convert to fraction form
    619,240.80/927,478.80 = 478,543.20/x
  3. Step 3: Cross multiply
    619,240.80x = 927,478.80 × 478,543.20
  4. Step 4: Simplify right side
    619,240.80x = 443,838,672,884.16
  5. Step 5: Solve for x
    x = 443,838,672,884.16/619,240.80
  6. Step 6: Final answer
    x = 716,746.49

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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.