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Finding the Fourth Proportional to 8,971,607.40, 13,457,411.10 and 4,188,638.40

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Solution

The fourth proportional to 8,971,607.40, 13,457,411.10 and 4,188,638.40 is: 6,282,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,607.40 : 13,457,411.10 = 4,188,638.40 : x
  2. Step 2: Convert to fraction form
    8,971,607.40/13,457,411.10 = 4,188,638.40/x
  3. Step 3: Cross multiply
    8,971,607.40x = 13,457,411.10 × 4,188,638.40
  4. Step 4: Simplify right side
    8,971,607.40x = 56,368,228,898,046.23
  5. Step 5: Solve for x
    x = 56,368,228,898,046.23/8,971,607.40
  6. Step 6: Final answer
    x = 6,282,957.60

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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.