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Finding the Fourth Proportional to 971,341.80, 1,457,012.70 and 687,906.60

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Solution

The fourth proportional to 971,341.80, 1,457,012.70 and 687,906.60 is: 1,031,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,341.80 : 1,457,012.70 = 687,906.60 : x
  2. Step 2: Convert to fraction form
    971,341.80/1,457,012.70 = 687,906.60/x
  3. Step 3: Cross multiply
    971,341.80x = 1,457,012.70 × 687,906.60
  4. Step 4: Simplify right side
    971,341.80x = 1,002,288,652,613.82
  5. Step 5: Solve for x
    x = 1,002,288,652,613.82/971,341.80
  6. Step 6: Final answer
    x = 1,031,859.90

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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.