Home / 915,898.02-1,262,478.85-721,989.51

Finding the Fourth Proportional to 915,898.02, 1,262,478.85 and 721,989.51

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Solution

The fourth proportional to 915,898.02, 1,262,478.85 and 721,989.51 is: 995,194.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,898.02 : 1,262,478.85 = 721,989.51 : x
  2. Step 2: Convert to fraction form
    915,898.02/1,262,478.85 = 721,989.51/x
  3. Step 3: Cross multiply
    915,898.02x = 1,262,478.85 × 721,989.51
  4. Step 4: Simplify right side
    915,898.02x = 911,496,486,296.86
  5. Step 5: Solve for x
    x = 911,496,486,296.86/915,898.02
  6. Step 6: Final answer
    x = 995,194.30

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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.