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Finding the Fourth Proportional to 875,390.66, 1,313,200.80 and 342,842.48

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Solution

The fourth proportional to 875,390.66, 1,313,200.80 and 342,842.48 is: 514,308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,390.66 : 1,313,200.80 = 342,842.48 : x
  2. Step 2: Convert to fraction form
    875,390.66/1,313,200.80 = 342,842.48/x
  3. Step 3: Cross multiply
    875,390.66x = 1,313,200.80 × 342,842.48
  4. Step 4: Simplify right side
    875,390.66x = 450,221,012,443.98
  5. Step 5: Solve for x
    x = 450,221,012,443.98/875,390.66
  6. Step 6: Final answer
    x = 514,308.68

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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.