Home / 820,325.20-1,230,487.80-618,246.40

Finding the Fourth Proportional to 820,325.20, 1,230,487.80 and 618,246.40

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Solution

The fourth proportional to 820,325.20, 1,230,487.80 and 618,246.40 is: 927,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,325.20 : 1,230,487.80 = 618,246.40 : x
  2. Step 2: Convert to fraction form
    820,325.20/1,230,487.80 = 618,246.40/x
  3. Step 3: Cross multiply
    820,325.20x = 1,230,487.80 × 618,246.40
  4. Step 4: Simplify right side
    820,325.20x = 760,744,652,593.92
  5. Step 5: Solve for x
    x = 760,744,652,593.92/820,325.20
  6. Step 6: Final answer
    x = 927,369.60

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1.5x scale

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.