Home / 917,440.76-1,266,025.28-509,567.49

Finding the Fourth Proportional to 917,440.76, 1,266,025.28 and 509,567.49

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Solution

The fourth proportional to 917,440.76, 1,266,025.28 and 509,567.49 is: 703,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,440.76 : 1,266,025.28 = 509,567.49 : x
  2. Step 2: Convert to fraction form
    917,440.76/1,266,025.28 = 509,567.49/x
  3. Step 3: Cross multiply
    917,440.76x = 1,266,025.28 × 509,567.49
  4. Step 4: Simplify right side
    917,440.76x = 645,125,321,658.31
  5. Step 5: Solve for x
    x = 645,125,321,658.31/917,440.76
  6. Step 6: Final answer
    x = 703,179.27

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Double scale
Find fourth proportional to 917,441.76, 1,266,026.65 and 509,568.49
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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.