Home / 780,068.40-1,170,016.20-219,159.60

Finding the Fourth Proportional to 780,068.40, 1,170,016.20 and 219,159.60

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Solution

The fourth proportional to 780,068.40, 1,170,016.20 and 219,159.60 is: 328,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,068.40 : 1,170,016.20 = 219,159.60 : x
  2. Step 2: Convert to fraction form
    780,068.40/1,170,016.20 = 219,159.60/x
  3. Step 3: Cross multiply
    780,068.40x = 1,170,016.20 × 219,159.60
  4. Step 4: Simplify right side
    780,068.40x = 256,420,282,385.52
  5. Step 5: Solve for x
    x = 256,420,282,385.52/780,068.40
  6. Step 6: Final answer
    x = 328,715.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.