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Finding the Fourth Proportional to 554,452.80, 831,679.20 and 302,510.40

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Solution

The fourth proportional to 554,452.80, 831,679.20 and 302,510.40 is: 453,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,452.80 : 831,679.20 = 302,510.40 : x
  2. Step 2: Convert to fraction form
    554,452.80/831,679.20 = 302,510.40/x
  3. Step 3: Cross multiply
    554,452.80x = 831,679.20 × 302,510.40
  4. Step 4: Simplify right side
    554,452.80x = 251,591,607,463.68
  5. Step 5: Solve for x
    x = 251,591,607,463.68/554,452.80
  6. Step 6: Final answer
    x = 453,765.60

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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.