Home / 868,139.78-1,302,276.95-260,880.66

Finding the Fourth Proportional to 868,139.78, 1,302,276.95 and 260,880.66

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Solution

The fourth proportional to 868,139.78, 1,302,276.95 and 260,880.66 is: 391,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,139.78 : 1,302,276.95 = 260,880.66 : x
  2. Step 2: Convert to fraction form
    868,139.78/1,302,276.95 = 260,880.66/x
  3. Step 3: Cross multiply
    868,139.78x = 1,302,276.95 × 260,880.66
  4. Step 4: Simplify right side
    868,139.78x = 339,738,868,914.38
  5. Step 5: Solve for x
    x = 339,738,868,914.38/868,139.78
  6. Step 6: Final answer
    x = 391,341.21

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Double scale
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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.