Home / 781,330.50-1,078,242.57-423,634.50

Finding the Fourth Proportional to 781,330.50, 1,078,242.57 and 423,634.50

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Solution

The fourth proportional to 781,330.50, 1,078,242.57 and 423,634.50 is: 584,619.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,330.50 : 1,078,242.57 = 423,634.50 : x
  2. Step 2: Convert to fraction form
    781,330.50/1,078,242.57 = 423,634.50/x
  3. Step 3: Cross multiply
    781,330.50x = 1,078,242.57 × 423,634.50
  4. Step 4: Simplify right side
    781,330.50x = 456,780,752,020.67
  5. Step 5: Solve for x
    x = 456,780,752,020.67/781,330.50
  6. Step 6: Final answer
    x = 584,619.12

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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.