Home / 772,139.20-1,157,668.80-456,433.60

Finding the Fourth Proportional to 772,139.20, 1,157,668.80 and 456,433.60

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Solution

The fourth proportional to 772,139.20, 1,157,668.80 and 456,433.60 is: 684,331.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,139.20 : 1,157,668.80 = 456,433.60 : x
  2. Step 2: Convert to fraction form
    772,139.20/1,157,668.80 = 456,433.60/x
  3. Step 3: Cross multiply
    772,139.20x = 1,157,668.80 × 456,433.60
  4. Step 4: Simplify right side
    772,139.20x = 528,398,937,991.68
  5. Step 5: Solve for x
    x = 528,398,937,991.68/772,139.20
  6. Step 6: Final answer
    x = 684,331.19

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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.