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Finding the Fourth Proportional to 667,859,330.66, 921,646,960.55 and 370,501,580.52

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Solution

The fourth proportional to 667,859,330.66, 921,646,960.55 and 370,501,580.52 is: 511,292,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,859,330.66 : 921,646,960.55 = 370,501,580.52 : x
  2. Step 2: Convert to fraction form
    667,859,330.66/921,646,960.55 = 370,501,580.52/x
  3. Step 3: Cross multiply
    667,859,330.66x = 921,646,960.55 × 370,501,580.52
  4. Step 4: Simplify right side
    667,859,330.66x = 341,471,655,563,376,576
  5. Step 5: Solve for x
    x = 341,471,655,563,376,576/667,859,330.66
  6. Step 6: Final answer
    x = 511,292,782.61

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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.