Home / 716,271.38-988,433.88-393,981.46

Finding the Fourth Proportional to 716,271.38, 988,433.88 and 393,981.46

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Solution

The fourth proportional to 716,271.38, 988,433.88 and 393,981.46 is: 543,683.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,271.38 : 988,433.88 = 393,981.46 : x
  2. Step 2: Convert to fraction form
    716,271.38/988,433.88 = 393,981.46/x
  3. Step 3: Cross multiply
    716,271.38x = 988,433.88 × 393,981.46
  4. Step 4: Simplify right side
    716,271.38x = 389,424,623,155.87
  5. Step 5: Solve for x
    x = 389,424,623,155.87/716,271.38
  6. Step 6: Final answer
    x = 543,683.07

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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.