Home / 918,006.30-1,377,009.45-286,983.90

Finding the Fourth Proportional to 918,006.30, 1,377,009.45 and 286,983.90

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Solution

The fourth proportional to 918,006.30, 1,377,009.45 and 286,983.90 is: 430,475.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,006.30 : 1,377,009.45 = 286,983.90 : x
  2. Step 2: Convert to fraction form
    918,006.30/1,377,009.45 = 286,983.90/x
  3. Step 3: Cross multiply
    918,006.30x = 1,377,009.45 × 286,983.90
  4. Step 4: Simplify right side
    918,006.30x = 395,179,542,297.86
  5. Step 5: Solve for x
    x = 395,179,542,297.86/918,006.30
  6. Step 6: Final answer
    x = 430,475.85

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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.