Home / 780,149.20-1,170,223.80-514,428.70

Finding the Fourth Proportional to 780,149.20, 1,170,223.80 and 514,428.70

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Solution

The fourth proportional to 780,149.20, 1,170,223.80 and 514,428.70 is: 771,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,149.20 : 1,170,223.80 = 514,428.70 : x
  2. Step 2: Convert to fraction form
    780,149.20/1,170,223.80 = 514,428.70/x
  3. Step 3: Cross multiply
    780,149.20x = 1,170,223.80 × 514,428.70
  4. Step 4: Simplify right side
    780,149.20x = 601,996,708,143.06
  5. Step 5: Solve for x
    x = 601,996,708,143.06/780,149.20
  6. Step 6: Final answer
    x = 771,643.05

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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.