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Finding the Fourth Proportional to 891,804.60, 1,337,706.90 and 418,537.80

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Solution

The fourth proportional to 891,804.60, 1,337,706.90 and 418,537.80 is: 627,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,804.60 : 1,337,706.90 = 418,537.80 : x
  2. Step 2: Convert to fraction form
    891,804.60/1,337,706.90 = 418,537.80/x
  3. Step 3: Cross multiply
    891,804.60x = 1,337,706.90 × 418,537.80
  4. Step 4: Simplify right side
    891,804.60x = 559,880,902,970.82
  5. Step 5: Solve for x
    x = 559,880,902,970.82/891,804.60
  6. Step 6: Final answer
    x = 627,806.70

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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.