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Finding the Fourth Proportional to 518,844.09, 715,974 and 301,035.89

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Solution

The fourth proportional to 518,844.09, 715,974 and 301,035.89 is: 415,411.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,844.09 : 715,974 = 301,035.89 : x
  2. Step 2: Convert to fraction form
    518,844.09/715,974 = 301,035.89/x
  3. Step 3: Cross multiply
    518,844.09x = 715,974 × 301,035.89
  4. Step 4: Simplify right side
    518,844.09x = 215,533,870,306.86
  5. Step 5: Solve for x
    x = 215,533,870,306.86/518,844.09
  6. Step 6: Final answer
    x = 415,411.63

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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.