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Finding the Fourth Proportional to 520,394.66, 717,881.55 and 348,319.94

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Solution

The fourth proportional to 520,394.66, 717,881.55 and 348,319.94 is: 480,505.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,394.66 : 717,881.55 = 348,319.94 : x
  2. Step 2: Convert to fraction form
    520,394.66/717,881.55 = 348,319.94/x
  3. Step 3: Cross multiply
    520,394.66x = 717,881.55 × 348,319.94
  4. Step 4: Simplify right side
    520,394.66x = 250,052,458,423.11
  5. Step 5: Solve for x
    x = 250,052,458,423.11/520,394.66
  6. Step 6: Final answer
    x = 480,505.43

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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.