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Finding the Fourth Proportional to 713,632.47, 984,826.31 and 391,323.34

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Solution

The fourth proportional to 713,632.47, 984,826.31 and 391,323.34 is: 540,033.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,632.47 : 984,826.31 = 391,323.34 : x
  2. Step 2: Convert to fraction form
    713,632.47/984,826.31 = 391,323.34/x
  3. Step 3: Cross multiply
    713,632.47x = 984,826.31 × 391,323.34
  4. Step 4: Simplify right side
    713,632.47x = 385,385,520,949.08
  5. Step 5: Solve for x
    x = 385,385,520,949.08/713,632.47
  6. Step 6: Final answer
    x = 540,033.61

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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.