Home / 820,181.70-1,230,272.55-745,386.30

Finding the Fourth Proportional to 820,181.70, 1,230,272.55 and 745,386.30

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Solution

The fourth proportional to 820,181.70, 1,230,272.55 and 745,386.30 is: 1,118,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,181.70 : 1,230,272.55 = 745,386.30 : x
  2. Step 2: Convert to fraction form
    820,181.70/1,230,272.55 = 745,386.30/x
  3. Step 3: Cross multiply
    820,181.70x = 1,230,272.55 × 745,386.30
  4. Step 4: Simplify right side
    820,181.70x = 917,028,304,036.07
  5. Step 5: Solve for x
    x = 917,028,304,036.07/820,181.70
  6. Step 6: Final answer
    x = 1,118,079.45

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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.