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Finding the Fourth Proportional to 516,959.20, 713,405.88 and 290,590.24

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Solution

The fourth proportional to 516,959.20, 713,405.88 and 290,590.24 is: 401,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,959.20 : 713,405.88 = 290,590.24 : x
  2. Step 2: Convert to fraction form
    516,959.20/713,405.88 = 290,590.24/x
  3. Step 3: Cross multiply
    516,959.20x = 713,405.88 × 290,590.24
  4. Step 4: Simplify right side
    516,959.20x = 207,308,785,886.61
  5. Step 5: Solve for x
    x = 207,308,785,886.61/516,959.20
  6. Step 6: Final answer
    x = 401,015.76

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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.