Home / 1,295,689.92-1,788,054.72-722,715.36

Finding the Fourth Proportional to 1,295,689.92, 1,788,054.72 and 722,715.36

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Solution

The fourth proportional to 1,295,689.92, 1,788,054.72 and 722,715.36 is: 997,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,689.92 : 1,788,054.72 = 722,715.36 : x
  2. Step 2: Convert to fraction form
    1,295,689.92/1,788,054.72 = 722,715.36/x
  3. Step 3: Cross multiply
    1,295,689.92x = 1,788,054.72 × 722,715.36
  4. Step 4: Simplify right side
    1,295,689.92x = 1,292,254,610,664.50
  5. Step 5: Solve for x
    x = 1,292,254,610,664.50/1,295,689.92
  6. Step 6: Final answer
    x = 997,348.66

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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.