Home / 762,720-1,048,821.12-661,943.04

Finding the Fourth Proportional to 762,720, 1,048,821.12 and 661,943.04

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Solution

The fourth proportional to 762,720, 1,048,821.12 and 661,943.04 is: 910,242.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,720 : 1,048,821.12 = 661,943.04 : x
  2. Step 2: Convert to fraction form
    762,720/1,048,821.12 = 661,943.04/x
  3. Step 3: Cross multiply
    762,720x = 1,048,821.12 × 661,943.04
  4. Step 4: Simplify right side
    762,720x = 694,259,840,589.01
  5. Step 5: Solve for x
    x = 694,259,840,589.01/762,720
  6. Step 6: Final answer
    x = 910,242.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.