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Finding the Fourth Proportional to 517,345.29, 713,929.19 and 290,990.25

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Solution

The fourth proportional to 517,345.29, 713,929.19 and 290,990.25 is: 401,562.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,345.29 : 713,929.19 = 290,990.25 : x
  2. Step 2: Convert to fraction form
    517,345.29/713,929.19 = 290,990.25/x
  3. Step 3: Cross multiply
    517,345.29x = 713,929.19 × 290,990.25
  4. Step 4: Simplify right side
    517,345.29x = 207,746,432,025.45
  5. Step 5: Solve for x
    x = 207,746,432,025.45/517,345.29
  6. Step 6: Final answer
    x = 401,562.43

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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.