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Finding the Fourth Proportional to 518,824.20, 715,855.32 and 314,870.52

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Solution

The fourth proportional to 518,824.20, 715,855.32 and 314,870.52 is: 434,447.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,824.20 : 715,855.32 = 314,870.52 : x
  2. Step 2: Convert to fraction form
    518,824.20/715,855.32 = 314,870.52/x
  3. Step 3: Cross multiply
    518,824.20x = 715,855.32 × 314,870.52
  4. Step 4: Simplify right side
    518,824.20x = 225,401,736,853.17
  5. Step 5: Solve for x
    x = 225,401,736,853.17/518,824.20
  6. Step 6: Final answer
    x = 434,447.23

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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.