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Finding the Fourth Proportional to 717,170.63, 989,398.87 and 426,724.27

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Solution

The fourth proportional to 717,170.63, 989,398.87 and 426,724.27 is: 588,703.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,170.63 : 989,398.87 = 426,724.27 : x
  2. Step 2: Convert to fraction form
    717,170.63/989,398.87 = 426,724.27/x
  3. Step 3: Cross multiply
    717,170.63x = 989,398.87 × 426,724.27
  4. Step 4: Simplify right side
    717,170.63x = 422,200,506,999.27
  5. Step 5: Solve for x
    x = 422,200,506,999.27/717,170.63
  6. Step 6: Final answer
    x = 588,703.01

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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.