Home / 928,862.40-1,391,981.40-687,089.55

Finding the Fourth Proportional to 928,862.40, 1,391,981.40 and 687,089.55

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Solution

The fourth proportional to 928,862.40, 1,391,981.40 and 687,089.55 is: 1,029,663.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,862.40 : 1,391,981.40 = 687,089.55 : x
  2. Step 2: Convert to fraction form
    928,862.40/1,391,981.40 = 687,089.55/x
  3. Step 3: Cross multiply
    928,862.40x = 1,391,981.40 × 687,089.55
  4. Step 4: Simplify right side
    928,862.40x = 956,415,873,734.37
  5. Step 5: Solve for x
    x = 956,415,873,734.37/928,862.40
  6. Step 6: Final answer
    x = 1,029,663.68

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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.