Home / 649,667.10-974,500.65-425,718.30

Finding the Fourth Proportional to 649,667.10, 974,500.65 and 425,718.30

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Solution

The fourth proportional to 649,667.10, 974,500.65 and 425,718.30 is: 638,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,667.10 : 974,500.65 = 425,718.30 : x
  2. Step 2: Convert to fraction form
    649,667.10/974,500.65 = 425,718.30/x
  3. Step 3: Cross multiply
    649,667.10x = 974,500.65 × 425,718.30
  4. Step 4: Simplify right side
    649,667.10x = 414,862,760,066.90
  5. Step 5: Solve for x
    x = 414,862,760,066.90/649,667.10
  6. Step 6: Final answer
    x = 638,577.45

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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.