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Finding the Fourth Proportional to 634,613.16, 875,761.29 and 348,131.28

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Solution

The fourth proportional to 634,613.16, 875,761.29 and 348,131.28 is: 480,418.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,613.16 : 875,761.29 = 348,131.28 : x
  2. Step 2: Convert to fraction form
    634,613.16/875,761.29 = 348,131.28/x
  3. Step 3: Cross multiply
    634,613.16x = 875,761.29 × 348,131.28
  4. Step 4: Simplify right side
    634,613.16x = 304,879,898,862.15
  5. Step 5: Solve for x
    x = 304,879,898,862.15/634,613.16
  6. Step 6: Final answer
    x = 480,418.49

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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.