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Finding the Fourth Proportional to 879,802.52, 1,319,726.71 and 280,762.87

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Solution

The fourth proportional to 879,802.52, 1,319,726.71 and 280,762.87 is: 421,151.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,802.52 : 1,319,726.71 = 280,762.87 : x
  2. Step 2: Convert to fraction form
    879,802.52/1,319,726.71 = 280,762.87/x
  3. Step 3: Cross multiply
    879,802.52x = 1,319,726.71 × 280,762.87
  4. Step 4: Simplify right side
    879,802.52x = 370,530,258,715.26
  5. Step 5: Solve for x
    x = 370,530,258,715.26/879,802.52
  6. Step 6: Final answer
    x = 421,151.62

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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.