Home / 789,315.20-1,183,195.20-390,017.60

Finding the Fourth Proportional to 789,315.20, 1,183,195.20 and 390,017.60

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Solution

The fourth proportional to 789,315.20, 1,183,195.20 and 390,017.60 is: 584,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,315.20 : 1,183,195.20 = 390,017.60 : x
  2. Step 2: Convert to fraction form
    789,315.20/1,183,195.20 = 390,017.60/x
  3. Step 3: Cross multiply
    789,315.20x = 1,183,195.20 × 390,017.60
  4. Step 4: Simplify right side
    789,315.20x = 461,466,952,235.52
  5. Step 5: Solve for x
    x = 461,466,952,235.52/789,315.20
  6. Step 6: Final answer
    x = 584,642.17

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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.