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Finding the Fourth Proportional to 774,843.55, 1,068,256.86 and 636,502.81

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Solution

The fourth proportional to 774,843.55, 1,068,256.86 and 636,502.81 is: 877,530.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,843.55 : 1,068,256.86 = 636,502.81 : x
  2. Step 2: Convert to fraction form
    774,843.55/1,068,256.86 = 636,502.81/x
  3. Step 3: Cross multiply
    774,843.55x = 1,068,256.86 × 636,502.81
  4. Step 4: Simplify right side
    774,843.55x = 679,948,491,600.52
  5. Step 5: Solve for x
    x = 679,948,491,600.52/774,843.55
  6. Step 6: Final answer
    x = 877,530.04

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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.