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Finding the Fourth Proportional to 704,487, 972,192.06 and 402,687.48

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Solution

The fourth proportional to 704,487, 972,192.06 and 402,687.48 is: 555,708.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,487 : 972,192.06 = 402,687.48 : x
  2. Step 2: Convert to fraction form
    704,487/972,192.06 = 402,687.48/x
  3. Step 3: Cross multiply
    704,487x = 972,192.06 × 402,687.48
  4. Step 4: Simplify right side
    704,487x = 391,489,570,717.41
  5. Step 5: Solve for x
    x = 391,489,570,717.41/704,487
  6. Step 6: Final answer
    x = 555,708.72

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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.