Home / 660,867.40-911,985.78-359,059.24

Finding the Fourth Proportional to 660,867.40, 911,985.78 and 359,059.24

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Solution

The fourth proportional to 660,867.40, 911,985.78 and 359,059.24 is: 495,495.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,867.40 : 911,985.78 = 359,059.24 : x
  2. Step 2: Convert to fraction form
    660,867.40/911,985.78 = 359,059.24/x
  3. Step 3: Cross multiply
    660,867.40x = 911,985.78 × 359,059.24
  4. Step 4: Simplify right side
    660,867.40x = 327,456,921,057.61
  5. Step 5: Solve for x
    x = 327,456,921,057.61/660,867.40
  6. Step 6: Final answer
    x = 495,495.65

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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.