Home / 787,815.40-1,182,014.70-314,840.20

Finding the Fourth Proportional to 787,815.40, 1,182,014.70 and 314,840.20

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Solution

The fourth proportional to 787,815.40, 1,182,014.70 and 314,840.20 is: 472,376.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,815.40 : 1,182,014.70 = 314,840.20 : x
  2. Step 2: Convert to fraction form
    787,815.40/1,182,014.70 = 314,840.20/x
  3. Step 3: Cross multiply
    787,815.40x = 1,182,014.70 × 314,840.20
  4. Step 4: Simplify right side
    787,815.40x = 372,145,744,550.94
  5. Step 5: Solve for x
    x = 372,145,744,550.94/787,815.40
  6. Step 6: Final answer
    x = 472,376.83

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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.