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Finding the Fourth Proportional to 917,658.96, 1,266,571.92 and 509,900.97

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Solution

The fourth proportional to 917,658.96, 1,266,571.92 and 509,900.97 is: 703,775.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,658.96 : 1,266,571.92 = 509,900.97 : x
  2. Step 2: Convert to fraction form
    917,658.96/1,266,571.92 = 509,900.97/x
  3. Step 3: Cross multiply
    917,658.96x = 1,266,571.92 × 509,900.97
  4. Step 4: Simplify right side
    917,658.96x = 645,826,250,582.76
  5. Step 5: Solve for x
    x = 645,826,250,582.76/917,658.96
  6. Step 6: Final answer
    x = 703,775.89

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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.