Home / 781,542.50-1,078,528.65-442,003.46

Finding the Fourth Proportional to 781,542.50, 1,078,528.65 and 442,003.46

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Solution

The fourth proportional to 781,542.50, 1,078,528.65 and 442,003.46 is: 609,964.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,542.50 : 1,078,528.65 = 442,003.46 : x
  2. Step 2: Convert to fraction form
    781,542.50/1,078,528.65 = 442,003.46/x
  3. Step 3: Cross multiply
    781,542.50x = 1,078,528.65 × 442,003.46
  4. Step 4: Simplify right side
    781,542.50x = 476,713,395,009.13
  5. Step 5: Solve for x
    x = 476,713,395,009.13/781,542.50
  6. Step 6: Final answer
    x = 609,964.77

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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.