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Finding the Fourth Proportional to 708,717.26, 978,055.88 and 402,845.11

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Solution

The fourth proportional to 708,717.26, 978,055.88 and 402,845.11 is: 555,941.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,717.26 : 978,055.88 = 402,845.11 : x
  2. Step 2: Convert to fraction form
    708,717.26/978,055.88 = 402,845.11/x
  3. Step 3: Cross multiply
    708,717.26x = 978,055.88 × 402,845.11
  4. Step 4: Simplify right side
    708,717.26x = 394,005,024,105.38
  5. Step 5: Solve for x
    x = 394,005,024,105.38/708,717.26
  6. Step 6: Final answer
    x = 555,941.06

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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.