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Finding the Fourth Proportional to 567,424.32, 781,984.80 and 423,931.20

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Solution

The fourth proportional to 567,424.32, 781,984.80 and 423,931.20 is: 584,232.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,424.32 : 781,984.80 = 423,931.20 : x
  2. Step 2: Convert to fraction form
    567,424.32/781,984.80 = 423,931.20/x
  3. Step 3: Cross multiply
    567,424.32x = 781,984.80 × 423,931.20
  4. Step 4: Simplify right side
    567,424.32x = 331,507,754,645.76
  5. Step 5: Solve for x
    x = 331,507,754,645.76/567,424.32
  6. Step 6: Final answer
    x = 584,232.55

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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.