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Finding the Fourth Proportional to 717,671.16, 989,023.48 and 513,367.26

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Solution

The fourth proportional to 717,671.16, 989,023.48 and 513,367.26 is: 707,472.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,671.16 : 989,023.48 = 513,367.26 : x
  2. Step 2: Convert to fraction form
    717,671.16/989,023.48 = 513,367.26/x
  3. Step 3: Cross multiply
    717,671.16x = 989,023.48 × 513,367.26
  4. Step 4: Simplify right side
    717,671.16x = 507,732,274,003.27
  5. Step 5: Solve for x
    x = 507,732,274,003.27/717,671.16
  6. Step 6: Final answer
    x = 707,472.03

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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.