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Finding the Fourth Proportional to 530,818, 732,517.90 and 289,104.82

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Solution

The fourth proportional to 530,818, 732,517.90 and 289,104.82 is: 398,958.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,818 : 732,517.90 = 289,104.82 : x
  2. Step 2: Convert to fraction form
    530,818/732,517.90 = 289,104.82/x
  3. Step 3: Cross multiply
    530,818x = 732,517.90 × 289,104.82
  4. Step 4: Simplify right side
    530,818x = 211,774,455,626.28
  5. Step 5: Solve for x
    x = 211,774,455,626.28/530,818
  6. Step 6: Final answer
    x = 398,958.69

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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.