Home / 1,289,948.67-1,780,149.06-709,196.96

Finding the Fourth Proportional to 1,289,948.67, 1,780,149.06 and 709,196.96

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Solution

The fourth proportional to 1,289,948.67, 1,780,149.06 and 709,196.96 is: 978,702.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,948.67 : 1,780,149.06 = 709,196.96 : x
  2. Step 2: Convert to fraction form
    1,289,948.67/1,780,149.06 = 709,196.96/x
  3. Step 3: Cross multiply
    1,289,948.67x = 1,780,149.06 × 709,196.96
  4. Step 4: Simplify right side
    1,289,948.67x = 1,262,476,292,798.11
  5. Step 5: Solve for x
    x = 1,262,476,292,798.11/1,289,948.67
  6. Step 6: Final answer
    x = 978,702.74

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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.