Home / 858,358.70-1,287,710.85-297,277.10

Finding the Fourth Proportional to 858,358.70, 1,287,710.85 and 297,277.10

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Solution

The fourth proportional to 858,358.70, 1,287,710.85 and 297,277.10 is: 445,975.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,358.70 : 1,287,710.85 = 297,277.10 : x
  2. Step 2: Convert to fraction form
    858,358.70/1,287,710.85 = 297,277.10/x
  3. Step 3: Cross multiply
    858,358.70x = 1,287,710.85 × 297,277.10
  4. Step 4: Simplify right side
    858,358.70x = 382,806,947,126.54
  5. Step 5: Solve for x
    x = 382,806,947,126.54/858,358.70
  6. Step 6: Final answer
    x = 445,975.50

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Double scale
Find fourth proportional to 858,359.70, 1,287,712.35 and 297,278.10
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.