Home / 811,585.22-1,120,008.42-489,316.01

Finding the Fourth Proportional to 811,585.22, 1,120,008.42 and 489,316.01

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Solution

The fourth proportional to 811,585.22, 1,120,008.42 and 489,316.01 is: 675,268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,585.22 : 1,120,008.42 = 489,316.01 : x
  2. Step 2: Convert to fraction form
    811,585.22/1,120,008.42 = 489,316.01/x
  3. Step 3: Cross multiply
    811,585.22x = 1,120,008.42 × 489,316.01
  4. Step 4: Simplify right side
    811,585.22x = 548,038,045,640.76
  5. Step 5: Solve for x
    x = 548,038,045,640.76/811,585.22
  6. Step 6: Final answer
    x = 675,268.64

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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.