Home / 516,438.16-712,639.20-286,980.85

Finding the Fourth Proportional to 516,438.16, 712,639.20 and 286,980.85

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Solution

The fourth proportional to 516,438.16, 712,639.20 and 286,980.85 is: 396,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,438.16 : 712,639.20 = 286,980.85 : x
  2. Step 2: Convert to fraction form
    516,438.16/712,639.20 = 286,980.85/x
  3. Step 3: Cross multiply
    516,438.16x = 712,639.20 × 286,980.85
  4. Step 4: Simplify right side
    516,438.16x = 204,513,803,359.32
  5. Step 5: Solve for x
    x = 204,513,803,359.32/516,438.16
  6. Step 6: Final answer
    x = 396,008.31

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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.