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Finding the Fourth Proportional to 704,484, 972,187.92 and 402,684.48

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Solution

The fourth proportional to 704,484, 972,187.92 and 402,684.48 is: 555,704.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,484 : 972,187.92 = 402,684.48 : x
  2. Step 2: Convert to fraction form
    704,484/972,187.92 = 402,684.48/x
  3. Step 3: Cross multiply
    704,484x = 972,187.92 × 402,684.48
  4. Step 4: Simplify right side
    704,484x = 391,484,987,027.48
  5. Step 5: Solve for x
    x = 391,484,987,027.48/704,484
  6. Step 6: Final answer
    x = 555,704.58

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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.