Home / 488,457.40-731,811.30-432,470.20

Finding the Fourth Proportional to 488,457.40, 731,811.30 and 432,470.20

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Solution

The fourth proportional to 488,457.40, 731,811.30 and 432,470.20 is: 647,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,457.40 : 731,811.30 = 432,470.20 : x
  2. Step 2: Convert to fraction form
    488,457.40/731,811.30 = 432,470.20/x
  3. Step 3: Cross multiply
    488,457.40x = 731,811.30 × 432,470.20
  4. Step 4: Simplify right side
    488,457.40x = 316,486,579,273.26
  5. Step 5: Solve for x
    x = 316,486,579,273.26/488,457.40
  6. Step 6: Final answer
    x = 647,930.77

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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.