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Finding the Fourth Proportional to 6,221,762.79, 8,581,165.25 and 4,047,000.40

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Solution

The fourth proportional to 6,221,762.79, 8,581,165.25 and 4,047,000.40 is: 5,581,694.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221,762.79 : 8,581,165.25 = 4,047,000.40 : x
  2. Step 2: Convert to fraction form
    6,221,762.79/8,581,165.25 = 4,047,000.40/x
  3. Step 3: Cross multiply
    6,221,762.79x = 8,581,165.25 × 4,047,000.40
  4. Step 4: Simplify right side
    6,221,762.79x = 34,727,979,189,707.55
  5. Step 5: Solve for x
    x = 34,727,979,189,707.55/6,221,762.79
  6. Step 6: Final answer
    x = 5,581,694.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.