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Finding the Fourth Proportional to 611,384.85, 917,077.28 and 554,304.15

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Solution

The fourth proportional to 611,384.85, 917,077.28 and 554,304.15 is: 831,456.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,384.85 : 917,077.28 = 554,304.15 : x
  2. Step 2: Convert to fraction form
    611,384.85/917,077.28 = 554,304.15/x
  3. Step 3: Cross multiply
    611,384.85x = 917,077.28 × 554,304.15
  4. Step 4: Simplify right side
    611,384.85x = 508,339,739,403.19
  5. Step 5: Solve for x
    x = 508,339,739,403.19/611,384.85
  6. Step 6: Final answer
    x = 831,456.23

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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.