Home / 687,702.60-1,029,221.10-603,721.80

Finding the Fourth Proportional to 687,702.60, 1,029,221.10 and 603,721.80

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Solution

The fourth proportional to 687,702.60, 1,029,221.10 and 603,721.80 is: 903,534.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,702.60 : 1,029,221.10 = 603,721.80 : x
  2. Step 2: Convert to fraction form
    687,702.60/1,029,221.10 = 603,721.80/x
  3. Step 3: Cross multiply
    687,702.60x = 1,029,221.10 × 603,721.80
  4. Step 4: Simplify right side
    687,702.60x = 621,363,215,089.98
  5. Step 5: Solve for x
    x = 621,363,215,089.98/687,702.60
  6. Step 6: Final answer
    x = 903,534.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.