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Finding the Fourth Proportional to 530,697.73, 732,340.86 and 288,979.72

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Solution

The fourth proportional to 530,697.73, 732,340.86 and 288,979.72 is: 398,780.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,697.73 : 732,340.86 = 288,979.72 : x
  2. Step 2: Convert to fraction form
    530,697.73/732,340.86 = 288,979.72/x
  3. Step 3: Cross multiply
    530,697.73x = 732,340.86 × 288,979.72
  4. Step 4: Simplify right side
    530,697.73x = 211,631,656,667.36
  5. Step 5: Solve for x
    x = 211,631,656,667.36/530,697.73
  6. Step 6: Final answer
    x = 398,780.03

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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.