Home / 1,272,623.90-1,756,213.59-721,443.63

Finding the Fourth Proportional to 1,272,623.90, 1,756,213.59 and 721,443.63

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Solution

The fourth proportional to 1,272,623.90, 1,756,213.59 and 721,443.63 is: 995,588.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,623.90 : 1,756,213.59 = 721,443.63 : x
  2. Step 2: Convert to fraction form
    1,272,623.90/1,756,213.59 = 721,443.63/x
  3. Step 3: Cross multiply
    1,272,623.90x = 1,756,213.59 × 721,443.63
  4. Step 4: Simplify right side
    1,272,623.90x = 1,267,009,107,424.93
  5. Step 5: Solve for x
    x = 1,267,009,107,424.93/1,272,623.90
  6. Step 6: Final answer
    x = 995,588.02

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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.