Home / 915,606.34-1,263,279.03-721,412.01

Finding the Fourth Proportional to 915,606.34, 1,263,279.03 and 721,412.01

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Solution

The fourth proportional to 915,606.34, 1,263,279.03 and 721,412.01 is: 995,345.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,606.34 : 1,263,279.03 = 721,412.01 : x
  2. Step 2: Convert to fraction form
    915,606.34/1,263,279.03 = 721,412.01/x
  3. Step 3: Cross multiply
    915,606.34x = 1,263,279.03 × 721,412.01
  4. Step 4: Simplify right side
    915,606.34x = 911,344,664,223.15
  5. Step 5: Solve for x
    x = 911,344,664,223.15/915,606.34
  6. Step 6: Final answer
    x = 995,345.52

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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.