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Finding the Fourth Proportional to 652,012.80, 978,019.20 and 615,271.20

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Solution

The fourth proportional to 652,012.80, 978,019.20 and 615,271.20 is: 922,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,012.80 : 978,019.20 = 615,271.20 : x
  2. Step 2: Convert to fraction form
    652,012.80/978,019.20 = 615,271.20/x
  3. Step 3: Cross multiply
    652,012.80x = 978,019.20 × 615,271.20
  4. Step 4: Simplify right side
    652,012.80x = 601,747,046,807.04
  5. Step 5: Solve for x
    x = 601,747,046,807.04/652,012.80
  6. Step 6: Final answer
    x = 922,906.80

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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.