Home / 649,620.20-974,430.30-425,671.40

Finding the Fourth Proportional to 649,620.20, 974,430.30 and 425,671.40

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Solution

The fourth proportional to 649,620.20, 974,430.30 and 425,671.40 is: 638,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,620.20 : 974,430.30 = 425,671.40 : x
  2. Step 2: Convert to fraction form
    649,620.20/974,430.30 = 425,671.40/x
  3. Step 3: Cross multiply
    649,620.20x = 974,430.30 × 425,671.40
  4. Step 4: Simplify right side
    649,620.20x = 414,787,110,003.42
  5. Step 5: Solve for x
    x = 414,787,110,003.42/649,620.20
  6. Step 6: Final answer
    x = 638,507.10

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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.