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Finding the Fourth Proportional to 680,483.26, 1,020,134.40 and 343,242.39

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Solution

The fourth proportional to 680,483.26, 1,020,134.40 and 343,242.39 is: 514,565.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,483.26 : 1,020,134.40 = 343,242.39 : x
  2. Step 2: Convert to fraction form
    680,483.26/1,020,134.40 = 343,242.39/x
  3. Step 3: Cross multiply
    680,483.26x = 1,020,134.40 × 343,242.39
  4. Step 4: Simplify right side
    680,483.26x = 350,153,369,577.22
  5. Step 5: Solve for x
    x = 350,153,369,577.22/680,483.26
  6. Step 6: Final answer
    x = 514,565.74

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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.