Home / 478,867.11-660,836.39-274,931.18

Finding the Fourth Proportional to 478,867.11, 660,836.39 and 274,931.18

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Solution

The fourth proportional to 478,867.11, 660,836.39 and 274,931.18 is: 379,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,867.11 : 660,836.39 = 274,931.18 : x
  2. Step 2: Convert to fraction form
    478,867.11/660,836.39 = 274,931.18/x
  3. Step 3: Cross multiply
    478,867.11x = 660,836.39 × 274,931.18
  4. Step 4: Simplify right side
    478,867.11x = 181,684,528,489.64
  5. Step 5: Solve for x
    x = 181,684,528,489.64/478,867.11
  6. Step 6: Final answer
    x = 379,404.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.