Home / 971,209.20-1,457,234.10-521,405.40

Finding the Fourth Proportional to 971,209.20, 1,457,234.10 and 521,405.40

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Solution

The fourth proportional to 971,209.20, 1,457,234.10 and 521,405.40 is: 782,333.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,209.20 : 1,457,234.10 = 521,405.40 : x
  2. Step 2: Convert to fraction form
    971,209.20/1,457,234.10 = 521,405.40/x
  3. Step 3: Cross multiply
    971,209.20x = 1,457,234.10 × 521,405.40
  4. Step 4: Simplify right side
    971,209.20x = 759,809,728,804.14
  5. Step 5: Solve for x
    x = 759,809,728,804.14/971,209.20
  6. Step 6: Final answer
    x = 782,333.74

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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.