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Finding the Fourth Proportional to 8,671,605.30, 12,993,411.15 and 7,243,931.70

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Solution

The fourth proportional to 8,671,605.30, 12,993,411.15 and 7,243,931.70 is: 10,854,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671,605.30 : 12,993,411.15 = 7,243,931.70 : x
  2. Step 2: Convert to fraction form
    8,671,605.30/12,993,411.15 = 7,243,931.70/x
  3. Step 3: Cross multiply
    8,671,605.30x = 12,993,411.15 × 7,243,931.70
  4. Step 4: Simplify right side
    8,671,605.30x = 94,123,382,920,618.45
  5. Step 5: Solve for x
    x = 94,123,382,920,618.45/8,671,605.30
  6. Step 6: Final answer
    x = 10,854,205.15

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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.