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Finding the Fourth Proportional to 614,174.64, 847,743.48 and 387,970.80

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Solution

The fourth proportional to 614,174.64, 847,743.48 and 387,970.80 is: 535,514.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,174.64 : 847,743.48 = 387,970.80 : x
  2. Step 2: Convert to fraction form
    614,174.64/847,743.48 = 387,970.80/x
  3. Step 3: Cross multiply
    614,174.64x = 847,743.48 × 387,970.80
  4. Step 4: Simplify right side
    614,174.64x = 328,899,716,130.38
  5. Step 5: Solve for x
    x = 328,899,716,130.38/614,174.64
  6. Step 6: Final answer
    x = 535,514.97

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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.