Home / 912,891.60-1,369,337.40-407,451.60

Finding the Fourth Proportional to 912,891.60, 1,369,337.40 and 407,451.60

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Solution

The fourth proportional to 912,891.60, 1,369,337.40 and 407,451.60 is: 611,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,891.60 : 1,369,337.40 = 407,451.60 : x
  2. Step 2: Convert to fraction form
    912,891.60/1,369,337.40 = 407,451.60/x
  3. Step 3: Cross multiply
    912,891.60x = 1,369,337.40 × 407,451.60
  4. Step 4: Simplify right side
    912,891.60x = 557,938,714,569.84
  5. Step 5: Solve for x
    x = 557,938,714,569.84/912,891.60
  6. Step 6: Final answer
    x = 611,177.40

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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.