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Finding the Fourth Proportional to 704,443.64, 972,132.22 and 402,644.12

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Solution

The fourth proportional to 704,443.64, 972,132.22 and 402,644.12 is: 555,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,443.64 : 972,132.22 = 402,644.12 : x
  2. Step 2: Convert to fraction form
    704,443.64/972,132.22 = 402,644.12/x
  3. Step 3: Cross multiply
    704,443.64x = 972,132.22 × 402,644.12
  4. Step 4: Simplify right side
    704,443.64x = 391,423,322,245.55
  5. Step 5: Solve for x
    x = 391,423,322,245.55/704,443.64
  6. Step 6: Final answer
    x = 555,648.88

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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.