Home / 851,569.65-1,275,908.50-513,900.76

Finding the Fourth Proportional to 851,569.65, 1,275,908.50 and 513,900.76

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Solution

The fourth proportional to 851,569.65, 1,275,908.50 and 513,900.76 is: 769,978.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,569.65 : 1,275,908.50 = 513,900.76 : x
  2. Step 2: Convert to fraction form
    851,569.65/1,275,908.50 = 513,900.76/x
  3. Step 3: Cross multiply
    851,569.65x = 1,275,908.50 × 513,900.76
  4. Step 4: Simplify right side
    851,569.65x = 655,690,347,840.46
  5. Step 5: Solve for x
    x = 655,690,347,840.46/851,569.65
  6. Step 6: Final answer
    x = 769,978.53

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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.