Home / 674,410.10-1,011,615.15-643,306.10

Finding the Fourth Proportional to 674,410.10, 1,011,615.15 and 643,306.10

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Solution

The fourth proportional to 674,410.10, 1,011,615.15 and 643,306.10 is: 964,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,410.10 : 1,011,615.15 = 643,306.10 : x
  2. Step 2: Convert to fraction form
    674,410.10/1,011,615.15 = 643,306.10/x
  3. Step 3: Cross multiply
    674,410.10x = 1,011,615.15 × 643,306.10
  4. Step 4: Simplify right side
    674,410.10x = 650,778,196,847.42
  5. Step 5: Solve for x
    x = 650,778,196,847.42/674,410.10
  6. Step 6: Final answer
    x = 964,959.15

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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.