Home / 648,116.70-972,175.05-512,814.30

Finding the Fourth Proportional to 648,116.70, 972,175.05 and 512,814.30

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Solution

The fourth proportional to 648,116.70, 972,175.05 and 512,814.30 is: 769,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,116.70 : 972,175.05 = 512,814.30 : x
  2. Step 2: Convert to fraction form
    648,116.70/972,175.05 = 512,814.30/x
  3. Step 3: Cross multiply
    648,116.70x = 972,175.05 × 512,814.30
  4. Step 4: Simplify right side
    648,116.70x = 498,545,267,743.22
  5. Step 5: Solve for x
    x = 498,545,267,743.22/648,116.70
  6. Step 6: Final answer
    x = 769,221.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.