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Finding the Fourth Proportional to 520,393.16, 717,879.48 and 348,318.44

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Solution

The fourth proportional to 520,393.16, 717,879.48 and 348,318.44 is: 480,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,393.16 : 717,879.48 = 348,318.44 : x
  2. Step 2: Convert to fraction form
    520,393.16/717,879.48 = 348,318.44/x
  3. Step 3: Cross multiply
    520,393.16x = 717,879.48 × 348,318.44
  4. Step 4: Simplify right side
    520,393.16x = 250,050,660,581.61
  5. Step 5: Solve for x
    x = 250,050,660,581.61/520,393.16
  6. Step 6: Final answer
    x = 480,503.36

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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.