Home / 749,081.80-1,123,622.70-497,139.40

Finding the Fourth Proportional to 749,081.80, 1,123,622.70 and 497,139.40

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Solution

The fourth proportional to 749,081.80, 1,123,622.70 and 497,139.40 is: 745,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,081.80 : 1,123,622.70 = 497,139.40 : x
  2. Step 2: Convert to fraction form
    749,081.80/1,123,622.70 = 497,139.40/x
  3. Step 3: Cross multiply
    749,081.80x = 1,123,622.70 × 497,139.40
  4. Step 4: Simplify right side
    749,081.80x = 558,597,114,904.38
  5. Step 5: Solve for x
    x = 558,597,114,904.38/749,081.80
  6. Step 6: Final answer
    x = 745,709.10

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Half scale
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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.