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Finding the Fourth Proportional to 710,643.72, 980,373.33 and 423,997.14

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Solution

The fourth proportional to 710,643.72, 980,373.33 and 423,997.14 is: 584,928.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,643.72 : 980,373.33 = 423,997.14 : x
  2. Step 2: Convert to fraction form
    710,643.72/980,373.33 = 423,997.14/x
  3. Step 3: Cross multiply
    710,643.72x = 980,373.33 × 423,997.14
  4. Step 4: Simplify right side
    710,643.72x = 415,675,488,052.28
  5. Step 5: Solve for x
    x = 415,675,488,052.28/710,643.72
  6. Step 6: Final answer
    x = 584,928.11

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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.