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Finding the Fourth Proportional to 863,005.70, 1,294,508.55 and 502,806.80

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Solution

The fourth proportional to 863,005.70, 1,294,508.55 and 502,806.80 is: 754,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,005.70 : 1,294,508.55 = 502,806.80 : x
  2. Step 2: Convert to fraction form
    863,005.70/1,294,508.55 = 502,806.80/x
  3. Step 3: Cross multiply
    863,005.70x = 1,294,508.55 × 502,806.80
  4. Step 4: Simplify right side
    863,005.70x = 650,887,701,598.14
  5. Step 5: Solve for x
    x = 650,887,701,598.14/863,005.70
  6. Step 6: Final answer
    x = 754,210.20

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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.