Home / 853,655.21-1,280,621.78-398,701.40

Finding the Fourth Proportional to 853,655.21, 1,280,621.78 and 398,701.40

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Solution

The fourth proportional to 853,655.21, 1,280,621.78 and 398,701.40 is: 598,117.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,655.21 : 1,280,621.78 = 398,701.40 : x
  2. Step 2: Convert to fraction form
    853,655.21/1,280,621.78 = 398,701.40/x
  3. Step 3: Cross multiply
    853,655.21x = 1,280,621.78 × 398,701.40
  4. Step 4: Simplify right side
    853,655.21x = 510,585,689,655.01
  5. Step 5: Solve for x
    x = 510,585,689,655.01/853,655.21
  6. Step 6: Final answer
    x = 598,117.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.