Home / 1,139,612.40-1,572,706.20-630,318.40

Finding the Fourth Proportional to 1,139,612.40, 1,572,706.20 and 630,318.40

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Solution

The fourth proportional to 1,139,612.40, 1,572,706.20 and 630,318.40 is: 869,862.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,612.40 : 1,572,706.20 = 630,318.40 : x
  2. Step 2: Convert to fraction form
    1,139,612.40/1,572,706.20 = 630,318.40/x
  3. Step 3: Cross multiply
    1,139,612.40x = 1,572,706.20 × 630,318.40
  4. Step 4: Simplify right side
    1,139,612.40x = 991,305,655,654.08
  5. Step 5: Solve for x
    x = 991,305,655,654.08/1,139,612.40
  6. Step 6: Final answer
    x = 869,862.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.