Home / 868,136.80-1,302,205.20-307,098.40

Finding the Fourth Proportional to 868,136.80, 1,302,205.20 and 307,098.40

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Solution

The fourth proportional to 868,136.80, 1,302,205.20 and 307,098.40 is: 460,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,136.80 : 1,302,205.20 = 307,098.40 : x
  2. Step 2: Convert to fraction form
    868,136.80/1,302,205.20 = 307,098.40/x
  3. Step 3: Cross multiply
    868,136.80x = 1,302,205.20 × 307,098.40
  4. Step 4: Simplify right side
    868,136.80x = 399,905,133,391.68
  5. Step 5: Solve for x
    x = 399,905,133,391.68/868,136.80
  6. Step 6: Final answer
    x = 460,647.60

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Half scale
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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.