Home / 917,378.40-1,376,067.60-385,281.30

Finding the Fourth Proportional to 917,378.40, 1,376,067.60 and 385,281.30

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Solution

The fourth proportional to 917,378.40, 1,376,067.60 and 385,281.30 is: 577,921.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,378.40 : 1,376,067.60 = 385,281.30 : x
  2. Step 2: Convert to fraction form
    917,378.40/1,376,067.60 = 385,281.30/x
  3. Step 3: Cross multiply
    917,378.40x = 1,376,067.60 × 385,281.30
  4. Step 4: Simplify right side
    917,378.40x = 530,173,113,815.88
  5. Step 5: Solve for x
    x = 530,173,113,815.88/917,378.40
  6. Step 6: Final answer
    x = 577,921.95

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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.