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Finding the Fourth Proportional to 667,859,328.59, 921,646,957.68 and 370,501,578.45

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Solution

The fourth proportional to 667,859,328.59, 921,646,957.68 and 370,501,578.45 is: 511,292,779.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,859,328.59 : 921,646,957.68 = 370,501,578.45 : x
  2. Step 2: Convert to fraction form
    667,859,328.59/921,646,957.68 = 370,501,578.45/x
  3. Step 3: Cross multiply
    667,859,328.59x = 921,646,957.68 × 370,501,578.45
  4. Step 4: Simplify right side
    667,859,328.59x = 341,471,652,594,080,320
  5. Step 5: Solve for x
    x = 341,471,652,594,080,320/667,859,328.59
  6. Step 6: Final answer
    x = 511,292,779.75

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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.