Home / 920,895.70-1,381,531.07-388,418.71

Finding the Fourth Proportional to 920,895.70, 1,381,531.07 and 388,418.71

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Solution

The fourth proportional to 920,895.70, 1,381,531.07 and 388,418.71 is: 582,707.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,895.70 : 1,381,531.07 = 388,418.71 : x
  2. Step 2: Convert to fraction form
    920,895.70/1,381,531.07 = 388,418.71/x
  3. Step 3: Cross multiply
    920,895.70x = 1,381,531.07 × 388,418.71
  4. Step 4: Simplify right side
    920,895.70x = 536,612,516,034.32
  5. Step 5: Solve for x
    x = 536,612,516,034.32/920,895.70
  6. Step 6: Final answer
    x = 582,707.16

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1.5x scale

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.