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Finding the Fourth Proportional to 8,691,966.80, 13,037,950.20 and 6,424,485.20

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Solution

The fourth proportional to 8,691,966.80, 13,037,950.20 and 6,424,485.20 is: 9,636,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,966.80 : 13,037,950.20 = 6,424,485.20 : x
  2. Step 2: Convert to fraction form
    8,691,966.80/13,037,950.20 = 6,424,485.20/x
  3. Step 3: Cross multiply
    8,691,966.80x = 13,037,950.20 × 6,424,485.20
  4. Step 4: Simplify right side
    8,691,966.80x = 83,762,118,098,237.03
  5. Step 5: Solve for x
    x = 83,762,118,098,237.03/8,691,966.80
  6. Step 6: Final answer
    x = 9,636,727.80

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1.5x scale

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.