Home / 859,479.54-1,288,854.81-409,680.06

Finding the Fourth Proportional to 859,479.54, 1,288,854.81 and 409,680.06

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Solution

The fourth proportional to 859,479.54, 1,288,854.81 and 409,680.06 is: 614,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,479.54 : 1,288,854.81 = 409,680.06 : x
  2. Step 2: Convert to fraction form
    859,479.54/1,288,854.81 = 409,680.06/x
  3. Step 3: Cross multiply
    859,479.54x = 1,288,854.81 × 409,680.06
  4. Step 4: Simplify right side
    859,479.54x = 528,018,115,892.09
  5. Step 5: Solve for x
    x = 528,018,115,892.09/859,479.54
  6. Step 6: Final answer
    x = 614,346.35

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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.