Home / 688,356.26-949,947.47-378,278.13

Finding the Fourth Proportional to 688,356.26, 949,947.47 and 378,278.13

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Solution

The fourth proportional to 688,356.26, 949,947.47 and 378,278.13 is: 522,032.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,356.26 : 949,947.47 = 378,278.13 : x
  2. Step 2: Convert to fraction form
    688,356.26/949,947.47 = 378,278.13/x
  3. Step 3: Cross multiply
    688,356.26x = 949,947.47 × 378,278.13
  4. Step 4: Simplify right side
    688,356.26x = 359,344,349,460.38
  5. Step 5: Solve for x
    x = 359,344,349,460.38/688,356.26
  6. Step 6: Final answer
    x = 522,032.51

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Double scale
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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.