Home / 810,581.28-1,214,044.48-390,171.84

Finding the Fourth Proportional to 810,581.28, 1,214,044.48 and 390,171.84

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Solution

The fourth proportional to 810,581.28, 1,214,044.48 and 390,171.84 is: 584,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,581.28 : 1,214,044.48 = 390,171.84 : x
  2. Step 2: Convert to fraction form
    810,581.28/1,214,044.48 = 390,171.84/x
  3. Step 3: Cross multiply
    810,581.28x = 1,214,044.48 × 390,171.84
  4. Step 4: Simplify right side
    810,581.28x = 473,685,968,603.44
  5. Step 5: Solve for x
    x = 473,685,968,603.44/810,581.28
  6. Step 6: Final answer
    x = 584,378.13

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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.