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Finding the Fourth Proportional to 660,422.17, 911,405.13 and 370,045.87

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Solution

The fourth proportional to 660,422.17, 911,405.13 and 370,045.87 is: 510,675.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,422.17 : 911,405.13 = 370,045.87 : x
  2. Step 2: Convert to fraction form
    660,422.17/911,405.13 = 370,045.87/x
  3. Step 3: Cross multiply
    660,422.17x = 911,405.13 × 370,045.87
  4. Step 4: Simplify right side
    660,422.17x = 337,261,704,253.31
  5. Step 5: Solve for x
    x = 337,261,704,253.31/660,422.17
  6. Step 6: Final answer
    x = 510,675.93

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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.