Home / 878,877.90-1,318,316.85-405,423.18

Finding the Fourth Proportional to 878,877.90, 1,318,316.85 and 405,423.18

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Solution

The fourth proportional to 878,877.90, 1,318,316.85 and 405,423.18 is: 608,134.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,877.90 : 1,318,316.85 = 405,423.18 : x
  2. Step 2: Convert to fraction form
    878,877.90/1,318,316.85 = 405,423.18/x
  3. Step 3: Cross multiply
    878,877.90x = 1,318,316.85 × 405,423.18
  4. Step 4: Simplify right side
    878,877.90x = 534,476,209,574.58
  5. Step 5: Solve for x
    x = 534,476,209,574.58/878,877.90
  6. Step 6: Final answer
    x = 608,134.77

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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.