Home / 971,211.20-1,457,237.10-521,407.40

Finding the Fourth Proportional to 971,211.20, 1,457,237.10 and 521,407.40

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Solution

The fourth proportional to 971,211.20, 1,457,237.10 and 521,407.40 is: 782,336.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,211.20 : 1,457,237.10 = 521,407.40 : x
  2. Step 2: Convert to fraction form
    971,211.20/1,457,237.10 = 521,407.40/x
  3. Step 3: Cross multiply
    971,211.20x = 1,457,237.10 × 521,407.40
  4. Step 4: Simplify right side
    971,211.20x = 759,814,207,494.54
  5. Step 5: Solve for x
    x = 759,814,207,494.54/971,211.20
  6. Step 6: Final answer
    x = 782,336.74

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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.