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Finding the Fourth Proportional to 679,309.71, 935,827.16 and 474,978.30

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Solution

The fourth proportional to 679,309.71, 935,827.16 and 474,978.30 is: 654,337.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,309.71 : 935,827.16 = 474,978.30 : x
  2. Step 2: Convert to fraction form
    679,309.71/935,827.16 = 474,978.30/x
  3. Step 3: Cross multiply
    679,309.71x = 935,827.16 × 474,978.30
  4. Step 4: Simplify right side
    679,309.71x = 444,497,593,550.63
  5. Step 5: Solve for x
    x = 444,497,593,550.63/679,309.71
  6. Step 6: Final answer
    x = 654,337.17

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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.