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Finding the Fourth Proportional to 8,960,438.40, 13,421,995.20 and 8,960,438.40

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Solution

The fourth proportional to 8,960,438.40, 13,421,995.20 and 8,960,438.40 is: 13,421,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960,438.40 : 13,421,995.20 = 8,960,438.40 : x
  2. Step 2: Convert to fraction form
    8,960,438.40/13,421,995.20 = 8,960,438.40/x
  3. Step 3: Cross multiply
    8,960,438.40x = 13,421,995.20 × 8,960,438.40
  4. Step 4: Simplify right side
    8,960,438.40x = 120,266,961,194,695.67
  5. Step 5: Solve for x
    x = 120,266,961,194,695.67/8,960,438.40
  6. Step 6: Final answer
    x = 13,421,995.20

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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.