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Finding the Fourth Proportional to 704,488, 972,193.44 and 402,688.48

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Solution

The fourth proportional to 704,488, 972,193.44 and 402,688.48 is: 555,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,488 : 972,193.44 = 402,688.48 : x
  2. Step 2: Convert to fraction form
    704,488/972,193.44 = 402,688.48/x
  3. Step 3: Cross multiply
    704,488x = 972,193.44 × 402,688.48
  4. Step 4: Simplify right side
    704,488x = 391,491,098,619.57
  5. Step 5: Solve for x
    x = 391,491,098,619.57/704,488
  6. Step 6: Final answer
    x = 555,710.10

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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.