Home / 621,001.40-931,502.10-355,280.90

Finding the Fourth Proportional to 621,001.40, 931,502.10 and 355,280.90

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Solution

The fourth proportional to 621,001.40, 931,502.10 and 355,280.90 is: 532,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,001.40 : 931,502.10 = 355,280.90 : x
  2. Step 2: Convert to fraction form
    621,001.40/931,502.10 = 355,280.90/x
  3. Step 3: Cross multiply
    621,001.40x = 931,502.10 × 355,280.90
  4. Step 4: Simplify right side
    621,001.40x = 330,944,904,439.89
  5. Step 5: Solve for x
    x = 330,944,904,439.89/621,001.40
  6. Step 6: Final answer
    x = 532,921.35

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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.