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Finding the Fourth Proportional to 879,807.90, 1,319,711.85 and 741,567.90

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Solution

The fourth proportional to 879,807.90, 1,319,711.85 and 741,567.90 is: 1,112,351.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,807.90 : 1,319,711.85 = 741,567.90 : x
  2. Step 2: Convert to fraction form
    879,807.90/1,319,711.85 = 741,567.90/x
  3. Step 3: Cross multiply
    879,807.90x = 1,319,711.85 × 741,567.90
  4. Step 4: Simplify right side
    879,807.90x = 978,655,945,209.62
  5. Step 5: Solve for x
    x = 978,655,945,209.62/879,807.90
  6. Step 6: Final answer
    x = 1,112,351.85

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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.