Home / 762,720.40-1,144,080.60-621,002.80

Finding the Fourth Proportional to 762,720.40, 1,144,080.60 and 621,002.80

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Solution

The fourth proportional to 762,720.40, 1,144,080.60 and 621,002.80 is: 931,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,720.40 : 1,144,080.60 = 621,002.80 : x
  2. Step 2: Convert to fraction form
    762,720.40/1,144,080.60 = 621,002.80/x
  3. Step 3: Cross multiply
    762,720.40x = 1,144,080.60 × 621,002.80
  4. Step 4: Simplify right side
    762,720.40x = 710,477,256,025.68
  5. Step 5: Solve for x
    x = 710,477,256,025.68/762,720.40
  6. Step 6: Final answer
    x = 931,504.20

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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.