Home / 926,285.32-1,278,342.54-518,428.12

Finding the Fourth Proportional to 926,285.32, 1,278,342.54 and 518,428.12

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Solution

The fourth proportional to 926,285.32, 1,278,342.54 and 518,428.12 is: 715,469.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,285.32 : 1,278,342.54 = 518,428.12 : x
  2. Step 2: Convert to fraction form
    926,285.32/1,278,342.54 = 518,428.12/x
  3. Step 3: Cross multiply
    926,285.32x = 1,278,342.54 × 518,428.12
  4. Step 4: Simplify right side
    926,285.32x = 662,728,719,728.23
  5. Step 5: Solve for x
    x = 662,728,719,728.23/926,285.32
  6. Step 6: Final answer
    x = 715,469.31

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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.