Home / 779,544.10-1,170,300.30-420,001.30

Finding the Fourth Proportional to 779,544.10, 1,170,300.30 and 420,001.30

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Solution

The fourth proportional to 779,544.10, 1,170,300.30 and 420,001.30 is: 630,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,544.10 : 1,170,300.30 = 420,001.30 : x
  2. Step 2: Convert to fraction form
    779,544.10/1,170,300.30 = 420,001.30/x
  3. Step 3: Cross multiply
    779,544.10x = 1,170,300.30 × 420,001.30
  4. Step 4: Simplify right side
    779,544.10x = 491,527,647,390.39
  5. Step 5: Solve for x
    x = 491,527,647,390.39/779,544.10
  6. Step 6: Final answer
    x = 630,532.19

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Double scale
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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.