Home / 917,661.27-1,266,337.36-509,788.76

Finding the Fourth Proportional to 917,661.27, 1,266,337.36 and 509,788.76

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Solution

The fourth proportional to 917,661.27, 1,266,337.36 and 509,788.76 is: 703,488.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,661.27 : 1,266,337.36 = 509,788.76 : x
  2. Step 2: Convert to fraction form
    917,661.27/1,266,337.36 = 509,788.76/x
  3. Step 3: Cross multiply
    917,661.27x = 1,266,337.36 × 509,788.76
  4. Step 4: Simplify right side
    917,661.27x = 645,564,546,801.62
  5. Step 5: Solve for x
    x = 645,564,546,801.62/917,661.27
  6. Step 6: Final answer
    x = 703,488.93

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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.