Home / 516,276.28-712,332.41-309,577.11

Finding the Fourth Proportional to 516,276.28, 712,332.41 and 309,577.11

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Solution

The fourth proportional to 516,276.28, 712,332.41 and 309,577.11 is: 427,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,276.28 : 712,332.41 = 309,577.11 : x
  2. Step 2: Convert to fraction form
    516,276.28/712,332.41 = 309,577.11/x
  3. Step 3: Cross multiply
    516,276.28x = 712,332.41 × 309,577.11
  4. Step 4: Simplify right side
    516,276.28x = 220,521,808,847.14
  5. Step 5: Solve for x
    x = 220,521,808,847.14/516,276.28
  6. Step 6: Final answer
    x = 427,139.15

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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.