Home / 514,979.28-710,660.52-288,619.92

Finding the Fourth Proportional to 514,979.28, 710,660.52 and 288,619.92

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Solution

The fourth proportional to 514,979.28, 710,660.52 and 288,619.92 is: 398,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,979.28 : 710,660.52 = 288,619.92 : x
  2. Step 2: Convert to fraction form
    514,979.28/710,660.52 = 288,619.92/x
  3. Step 3: Cross multiply
    514,979.28x = 710,660.52 × 288,619.92
  4. Step 4: Simplify right side
    514,979.28x = 205,110,782,429.56
  5. Step 5: Solve for x
    x = 205,110,782,429.56/514,979.28
  6. Step 6: Final answer
    x = 398,289.39

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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.