Home / 716,271.95-988,439.04-393,975.12

Finding the Fourth Proportional to 716,271.95, 988,439.04 and 393,975.12

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Solution

The fourth proportional to 716,271.95, 988,439.04 and 393,975.12 is: 543,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,271.95 : 988,439.04 = 393,975.12 : x
  2. Step 2: Convert to fraction form
    716,271.95/988,439.04 = 393,975.12/x
  3. Step 3: Cross multiply
    716,271.95x = 988,439.04 × 393,975.12
  4. Step 4: Simplify right side
    716,271.95x = 389,420,389,396.69
  5. Step 5: Solve for x
    x = 389,420,389,396.69/716,271.95
  6. Step 6: Final answer
    x = 543,676.73

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Double scale
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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.