Home / 831,880.80-1,148,136.66-469,407.42

Finding the Fourth Proportional to 831,880.80, 1,148,136.66 and 469,407.42

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Solution

The fourth proportional to 831,880.80, 1,148,136.66 and 469,407.42 is: 647,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,880.80 : 1,148,136.66 = 469,407.42 : x
  2. Step 2: Convert to fraction form
    831,880.80/1,148,136.66 = 469,407.42/x
  3. Step 3: Cross multiply
    831,880.80x = 1,148,136.66 × 469,407.42
  4. Step 4: Simplify right side
    831,880.80x = 538,943,867,378.02
  5. Step 5: Solve for x
    x = 538,943,867,378.02/831,880.80
  6. Step 6: Final answer
    x = 647,861.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.