Home / 918,110.70-1,377,166.05-420,446.70

Finding the Fourth Proportional to 918,110.70, 1,377,166.05 and 420,446.70

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Solution

The fourth proportional to 918,110.70, 1,377,166.05 and 420,446.70 is: 630,670.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,110.70 : 1,377,166.05 = 420,446.70 : x
  2. Step 2: Convert to fraction form
    918,110.70/1,377,166.05 = 420,446.70/x
  3. Step 3: Cross multiply
    918,110.70x = 1,377,166.05 × 420,446.70
  4. Step 4: Simplify right side
    918,110.70x = 579,024,921,074.54
  5. Step 5: Solve for x
    x = 579,024,921,074.54/918,110.70
  6. Step 6: Final answer
    x = 630,670.05

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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.