Home / 875,117.10-1,312,675.65-749,145.90

Finding the Fourth Proportional to 875,117.10, 1,312,675.65 and 749,145.90

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Solution

The fourth proportional to 875,117.10, 1,312,675.65 and 749,145.90 is: 1,123,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,117.10 : 1,312,675.65 = 749,145.90 : x
  2. Step 2: Convert to fraction form
    875,117.10/1,312,675.65 = 749,145.90/x
  3. Step 3: Cross multiply
    875,117.10x = 1,312,675.65 × 749,145.90
  4. Step 4: Simplify right side
    875,117.10x = 983,385,581,227.34
  5. Step 5: Solve for x
    x = 983,385,581,227.34/875,117.10
  6. Step 6: Final answer
    x = 1,123,718.85

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Double scale
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Similar ratio
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1.5x scale

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.