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Finding the Fourth Proportional to 519,479.81, 716,875.16 and 290,040.62

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Solution

The fourth proportional to 519,479.81, 716,875.16 and 290,040.62 is: 400,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,479.81 : 716,875.16 = 290,040.62 : x
  2. Step 2: Convert to fraction form
    519,479.81/716,875.16 = 290,040.62/x
  3. Step 3: Cross multiply
    519,479.81x = 716,875.16 × 290,040.62
  4. Step 4: Simplify right side
    519,479.81x = 207,922,912,465.90
  5. Step 5: Solve for x
    x = 207,922,912,465.90/519,479.81
  6. Step 6: Final answer
    x = 400,252.15

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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.