Home / 813,759.71-1,123,279.02-555,451.77

Finding the Fourth Proportional to 813,759.71, 1,123,279.02 and 555,451.77

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Solution

The fourth proportional to 813,759.71, 1,123,279.02 and 555,451.77 is: 766,721.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,759.71 : 1,123,279.02 = 555,451.77 : x
  2. Step 2: Convert to fraction form
    813,759.71/1,123,279.02 = 555,451.77/x
  3. Step 3: Cross multiply
    813,759.71x = 1,123,279.02 × 555,451.77
  4. Step 4: Simplify right side
    813,759.71x = 623,927,319,862.87
  5. Step 5: Solve for x
    x = 623,927,319,862.87/813,759.71
  6. Step 6: Final answer
    x = 766,721.82

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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.