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Finding the Fourth Proportional to 616,081.20, 849,737.16 and 389,508

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Solution

The fourth proportional to 616,081.20, 849,737.16 and 389,508 is: 537,233.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,081.20 : 849,737.16 = 389,508 : x
  2. Step 2: Convert to fraction form
    616,081.20/849,737.16 = 389,508/x
  3. Step 3: Cross multiply
    616,081.20x = 849,737.16 × 389,508
  4. Step 4: Simplify right side
    616,081.20x = 330,979,421,717.28
  5. Step 5: Solve for x
    x = 330,979,421,717.28/616,081.20
  6. Step 6: Final answer
    x = 537,233.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.