Home / 779,981-1,169,823.54-380,219.72

Finding the Fourth Proportional to 779,981, 1,169,823.54 and 380,219.72

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Solution

The fourth proportional to 779,981, 1,169,823.54 and 380,219.72 is: 570,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,981 : 1,169,823.54 = 380,219.72 : x
  2. Step 2: Convert to fraction form
    779,981/1,169,823.54 = 380,219.72/x
  3. Step 3: Cross multiply
    779,981x = 1,169,823.54 × 380,219.72
  4. Step 4: Simplify right side
    779,981x = 444,789,978,828.21
  5. Step 5: Solve for x
    x = 444,789,978,828.21/779,981
  6. Step 6: Final answer
    x = 570,257.45

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Double scale
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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.