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Finding the Fourth Proportional to 518,725.99, 715,733.60 and 314,884.22

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Solution

The fourth proportional to 518,725.99, 715,733.60 and 314,884.22 is: 434,474.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,725.99 : 715,733.60 = 314,884.22 : x
  2. Step 2: Convert to fraction form
    518,725.99/715,733.60 = 314,884.22/x
  3. Step 3: Cross multiply
    518,725.99x = 715,733.60 × 314,884.22
  4. Step 4: Simplify right side
    518,725.99x = 225,373,216,578.71
  5. Step 5: Solve for x
    x = 225,373,216,578.71/518,725.99
  6. Step 6: Final answer
    x = 434,474.50

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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.