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Finding the Fourth Proportional to 8,397,789.80, 12,596,684.70 and 3,604,663.40

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Solution

The fourth proportional to 8,397,789.80, 12,596,684.70 and 3,604,663.40 is: 5,406,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397,789.80 : 12,596,684.70 = 3,604,663.40 : x
  2. Step 2: Convert to fraction form
    8,397,789.80/12,596,684.70 = 3,604,663.40/x
  3. Step 3: Cross multiply
    8,397,789.80x = 12,596,684.70 × 3,604,663.40
  4. Step 4: Simplify right side
    8,397,789.80x = 45,406,808,299,429.98
  5. Step 5: Solve for x
    x = 45,406,808,299,429.98/8,397,789.80
  6. Step 6: Final answer
    x = 5,406,995.10

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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.