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Finding the Fourth Proportional to 704,441.62, 972,129.44 and 402,642.10

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Solution

The fourth proportional to 704,441.62, 972,129.44 and 402,642.10 is: 555,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,441.62 : 972,129.44 = 402,642.10 : x
  2. Step 2: Convert to fraction form
    704,441.62/972,129.44 = 402,642.10/x
  3. Step 3: Cross multiply
    704,441.62x = 972,129.44 × 402,642.10
  4. Step 4: Simplify right side
    704,441.62x = 391,420,239,193.42
  5. Step 5: Solve for x
    x = 391,420,239,193.42/704,441.62
  6. Step 6: Final answer
    x = 555,646.10

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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.