Home / 780,980.68-1,077,435.38-508,949.47

Finding the Fourth Proportional to 780,980.68, 1,077,435.38 and 508,949.47

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Solution

The fourth proportional to 780,980.68, 1,077,435.38 and 508,949.47 is: 702,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,980.68 : 1,077,435.38 = 508,949.47 : x
  2. Step 2: Convert to fraction form
    780,980.68/1,077,435.38 = 508,949.47/x
  3. Step 3: Cross multiply
    780,980.68x = 1,077,435.38 × 508,949.47
  4. Step 4: Simplify right side
    780,980.68x = 548,360,168,229.42
  5. Step 5: Solve for x
    x = 548,360,168,229.42/780,980.68
  6. Step 6: Final answer
    x = 702,143.06

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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.