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Finding the Fourth Proportional to 971,310.40, 1,457,311.20 and 936,750.40

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Solution

The fourth proportional to 971,310.40, 1,457,311.20 and 936,750.40 is: 1,405,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,310.40 : 1,457,311.20 = 936,750.40 : x
  2. Step 2: Convert to fraction form
    971,310.40/1,457,311.20 = 936,750.40/x
  3. Step 3: Cross multiply
    971,310.40x = 1,457,311.20 × 936,750.40
  4. Step 4: Simplify right side
    971,310.40x = 1,365,136,849,524.48
  5. Step 5: Solve for x
    x = 1,365,136,849,524.48/971,310.40
  6. Step 6: Final answer
    x = 1,405,458.90

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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.