Home / 769,007.70-1,153,511.55-556,431.30

Finding the Fourth Proportional to 769,007.70, 1,153,511.55 and 556,431.30

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Solution

The fourth proportional to 769,007.70, 1,153,511.55 and 556,431.30 is: 834,646.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,007.70 : 1,153,511.55 = 556,431.30 : x
  2. Step 2: Convert to fraction form
    769,007.70/1,153,511.55 = 556,431.30/x
  3. Step 3: Cross multiply
    769,007.70x = 1,153,511.55 × 556,431.30
  4. Step 4: Simplify right side
    769,007.70x = 641,849,931,331.52
  5. Step 5: Solve for x
    x = 641,849,931,331.52/769,007.70
  6. Step 6: Final answer
    x = 834,646.95

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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.