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Finding the Fourth Proportional to 928,807.20, 1,393,210.80 and 928,807.20

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Solution

The fourth proportional to 928,807.20, 1,393,210.80 and 928,807.20 is: 1,393,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,807.20 : 1,393,210.80 = 928,807.20 : x
  2. Step 2: Convert to fraction form
    928,807.20/1,393,210.80 = 928,807.20/x
  3. Step 3: Cross multiply
    928,807.20x = 1,393,210.80 × 928,807.20
  4. Step 4: Simplify right side
    928,807.20x = 1,294,024,222,157.76
  5. Step 5: Solve for x
    x = 1,294,024,222,157.76/928,807.20
  6. Step 6: Final answer
    x = 1,393,210.80

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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.