Home / 910,420.60-1,365,630.90-311,328.40

Finding the Fourth Proportional to 910,420.60, 1,365,630.90 and 311,328.40

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Solution

The fourth proportional to 910,420.60, 1,365,630.90 and 311,328.40 is: 466,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,420.60 : 1,365,630.90 = 311,328.40 : x
  2. Step 2: Convert to fraction form
    910,420.60/1,365,630.90 = 311,328.40/x
  3. Step 3: Cross multiply
    910,420.60x = 1,365,630.90 × 311,328.40
  4. Step 4: Simplify right side
    910,420.60x = 425,159,683,087.56
  5. Step 5: Solve for x
    x = 425,159,683,087.56/910,420.60
  6. Step 6: Final answer
    x = 466,992.60

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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.