Home / 915,741.60-1,262,266.95-721,834.89

Finding the Fourth Proportional to 915,741.60, 1,262,266.95 and 721,834.89

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Solution

The fourth proportional to 915,741.60, 1,262,266.95 and 721,834.89 is: 994,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,741.60 : 1,262,266.95 = 721,834.89 : x
  2. Step 2: Convert to fraction form
    915,741.60/1,262,266.95 = 721,834.89/x
  3. Step 3: Cross multiply
    915,741.60x = 1,262,266.95 × 721,834.89
  4. Step 4: Simplify right side
    915,741.60x = 911,148,325,003.89
  5. Step 5: Solve for x
    x = 911,148,325,003.89/915,741.60
  6. Step 6: Final answer
    x = 994,984.09

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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.