Home / 766,086.95-1,148,332.17-428,632.85

Finding the Fourth Proportional to 766,086.95, 1,148,332.17 and 428,632.85

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Solution

The fourth proportional to 766,086.95, 1,148,332.17 and 428,632.85 is: 642,502.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,086.95 : 1,148,332.17 = 428,632.85 : x
  2. Step 2: Convert to fraction form
    766,086.95/1,148,332.17 = 428,632.85/x
  3. Step 3: Cross multiply
    766,086.95x = 1,148,332.17 × 428,632.85
  4. Step 4: Simplify right side
    766,086.95x = 492,212,886,295.58
  5. Step 5: Solve for x
    x = 492,212,886,295.58/766,086.95
  6. Step 6: Final answer
    x = 642,502.64

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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.