Home / 810,719.23-1,118,743.90-448,121.46

Finding the Fourth Proportional to 810,719.23, 1,118,743.90 and 448,121.46

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Solution

The fourth proportional to 810,719.23, 1,118,743.90 and 448,121.46 is: 618,380.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,719.23 : 1,118,743.90 = 448,121.46 : x
  2. Step 2: Convert to fraction form
    810,719.23/1,118,743.90 = 448,121.46/x
  3. Step 3: Cross multiply
    810,719.23x = 1,118,743.90 × 448,121.46
  4. Step 4: Simplify right side
    810,719.23x = 501,333,155,429.76
  5. Step 5: Solve for x
    x = 501,333,155,429.76/810,719.23
  6. Step 6: Final answer
    x = 618,380.74

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1.5x scale

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.