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Finding the Fourth Proportional to 518,498.01, 715,450.79 and 300,697.38

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Solution

The fourth proportional to 518,498.01, 715,450.79 and 300,697.38 is: 414,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,498.01 : 715,450.79 = 300,697.38 : x
  2. Step 2: Convert to fraction form
    518,498.01/715,450.79 = 300,697.38/x
  3. Step 3: Cross multiply
    518,498.01x = 715,450.79 × 300,697.38
  4. Step 4: Simplify right side
    518,498.01x = 215,134,178,823.67
  5. Step 5: Solve for x
    x = 215,134,178,823.67/518,498.01
  6. Step 6: Final answer
    x = 414,918.04

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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.