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Finding the Fourth Proportional to 520,085.60, 779,545.20 and 267,268.40

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Solution

The fourth proportional to 520,085.60, 779,545.20 and 267,268.40 is: 400,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,085.60 : 779,545.20 = 267,268.40 : x
  2. Step 2: Convert to fraction form
    520,085.60/779,545.20 = 267,268.40/x
  3. Step 3: Cross multiply
    520,085.60x = 779,545.20 × 267,268.40
  4. Step 4: Simplify right side
    520,085.60x = 208,347,798,331.68
  5. Step 5: Solve for x
    x = 208,347,798,331.68/520,085.60
  6. Step 6: Final answer
    x = 400,602.90

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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.