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Finding the Fourth Proportional to 710,645.72, 980,376.08 and 423,999.14

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Solution

The fourth proportional to 710,645.72, 980,376.08 and 423,999.14 is: 584,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,645.72 : 980,376.08 = 423,999.14 : x
  2. Step 2: Convert to fraction form
    710,645.72/980,376.08 = 423,999.14/x
  3. Step 3: Cross multiply
    710,645.72x = 980,376.08 × 423,999.14
  4. Step 4: Simplify right side
    710,645.72x = 415,678,614,796.57
  5. Step 5: Solve for x
    x = 415,678,614,796.57/710,645.72
  6. Step 6: Final answer
    x = 584,930.86

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1.5x scale

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.