Home / 885,802.70-1,328,704.05-511,388.30

Finding the Fourth Proportional to 885,802.70, 1,328,704.05 and 511,388.30

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Solution

The fourth proportional to 885,802.70, 1,328,704.05 and 511,388.30 is: 767,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,802.70 : 1,328,704.05 = 511,388.30 : x
  2. Step 2: Convert to fraction form
    885,802.70/1,328,704.05 = 511,388.30/x
  3. Step 3: Cross multiply
    885,802.70x = 1,328,704.05 × 511,388.30
  4. Step 4: Simplify right side
    885,802.70x = 679,483,705,332.62
  5. Step 5: Solve for x
    x = 679,483,705,332.62/885,802.70
  6. Step 6: Final answer
    x = 767,082.45

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Half scale
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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.