Home / 917,658.78-1,266,571.52-509,900.73

Finding the Fourth Proportional to 917,658.78, 1,266,571.52 and 509,900.73

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Solution

The fourth proportional to 917,658.78, 1,266,571.52 and 509,900.73 is: 703,775.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,658.78 : 1,266,571.52 = 509,900.73 : x
  2. Step 2: Convert to fraction form
    917,658.78/1,266,571.52 = 509,900.73/x
  3. Step 3: Cross multiply
    917,658.78x = 1,266,571.52 × 509,900.73
  4. Step 4: Simplify right side
    917,658.78x = 645,825,742,645.21
  5. Step 5: Solve for x
    x = 645,825,742,645.21/917,658.78
  6. Step 6: Final answer
    x = 703,775.47

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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.