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Finding the Fourth Proportional to 530,519.70, 732,094.78 and 288,797.26

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Solution

The fourth proportional to 530,519.70, 732,094.78 and 288,797.26 is: 398,528.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,519.70 : 732,094.78 = 288,797.26 : x
  2. Step 2: Convert to fraction form
    530,519.70/732,094.78 = 288,797.26/x
  3. Step 3: Cross multiply
    530,519.70x = 732,094.78 × 288,797.26
  4. Step 4: Simplify right side
    530,519.70x = 211,426,966,524.30
  5. Step 5: Solve for x
    x = 211,426,966,524.30/530,519.70
  6. Step 6: Final answer
    x = 398,528.02

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Double scale
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Similar ratio
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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.