Home / 920,545.40-1,380,818.10-255,697.40

Finding the Fourth Proportional to 920,545.40, 1,380,818.10 and 255,697.40

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Solution

The fourth proportional to 920,545.40, 1,380,818.10 and 255,697.40 is: 383,546.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,545.40 : 1,380,818.10 = 255,697.40 : x
  2. Step 2: Convert to fraction form
    920,545.40/1,380,818.10 = 255,697.40/x
  3. Step 3: Cross multiply
    920,545.40x = 1,380,818.10 × 255,697.40
  4. Step 4: Simplify right side
    920,545.40x = 353,071,598,042.94
  5. Step 5: Solve for x
    x = 353,071,598,042.94/920,545.40
  6. Step 6: Final answer
    x = 383,546.10

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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.