Home / 614,720.20-922,080.30-425,763.40

Finding the Fourth Proportional to 614,720.20, 922,080.30 and 425,763.40

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Solution

The fourth proportional to 614,720.20, 922,080.30 and 425,763.40 is: 638,645.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,720.20 : 922,080.30 = 425,763.40 : x
  2. Step 2: Convert to fraction form
    614,720.20/922,080.30 = 425,763.40/x
  3. Step 3: Cross multiply
    614,720.20x = 922,080.30 × 425,763.40
  4. Step 4: Simplify right side
    614,720.20x = 392,588,043,601.02
  5. Step 5: Solve for x
    x = 392,588,043,601.02/614,720.20
  6. Step 6: Final answer
    x = 638,645.10

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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.