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Finding the Fourth Proportional to 877,888.98, 1,317,387 and 345,340.80

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Solution

The fourth proportional to 877,888.98, 1,317,387 and 345,340.80 is: 518,228.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,888.98 : 1,317,387 = 345,340.80 : x
  2. Step 2: Convert to fraction form
    877,888.98/1,317,387 = 345,340.80/x
  3. Step 3: Cross multiply
    877,888.98x = 1,317,387 × 345,340.80
  4. Step 4: Simplify right side
    877,888.98x = 454,947,480,489.60
  5. Step 5: Solve for x
    x = 454,947,480,489.60/877,888.98
  6. Step 6: Final answer
    x = 518,228.95

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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.