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Finding the Fourth Proportional to 530,494.16, 732,074.40 and 288,778.73

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Solution

The fourth proportional to 530,494.16, 732,074.40 and 288,778.73 is: 398,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,494.16 : 732,074.40 = 288,778.73 : x
  2. Step 2: Convert to fraction form
    530,494.16/732,074.40 = 288,778.73/x
  3. Step 3: Cross multiply
    530,494.16x = 732,074.40 × 288,778.73
  4. Step 4: Simplify right side
    530,494.16x = 211,407,511,837.14
  5. Step 5: Solve for x
    x = 211,407,511,837.14/530,494.16
  6. Step 6: Final answer
    x = 398,510.54

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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.