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Finding the Fourth Proportional to 660,729.71, 911,590.13 and 370,298.81

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Solution

The fourth proportional to 660,729.71, 911,590.13 and 370,298.81 is: 510,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,729.71 : 911,590.13 = 370,298.81 : x
  2. Step 2: Convert to fraction form
    660,729.71/911,590.13 = 370,298.81/x
  3. Step 3: Cross multiply
    660,729.71x = 911,590.13 × 370,298.81
  4. Step 4: Simplify right side
    660,729.71x = 337,560,743,551.47
  5. Step 5: Solve for x
    x = 337,560,743,551.47/660,729.71
  6. Step 6: Final answer
    x = 510,890.82

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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.