Home / 426,103.70-639,155.55-268,510.10

Finding the Fourth Proportional to 426,103.70, 639,155.55 and 268,510.10

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Solution

The fourth proportional to 426,103.70, 639,155.55 and 268,510.10 is: 402,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,103.70 : 639,155.55 = 268,510.10 : x
  2. Step 2: Convert to fraction form
    426,103.70/639,155.55 = 268,510.10/x
  3. Step 3: Cross multiply
    426,103.70x = 639,155.55 × 268,510.10
  4. Step 4: Simplify right side
    426,103.70x = 171,619,720,646.06
  5. Step 5: Solve for x
    x = 171,619,720,646.06/426,103.70
  6. Step 6: Final answer
    x = 402,765.15

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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.