Home / 723,116.80-997,972.76-400,889.19

Finding the Fourth Proportional to 723,116.80, 997,972.76 and 400,889.19

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Solution

The fourth proportional to 723,116.80, 997,972.76 and 400,889.19 is: 553,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,116.80 : 997,972.76 = 400,889.19 : x
  2. Step 2: Convert to fraction form
    723,116.80/997,972.76 = 400,889.19/x
  3. Step 3: Cross multiply
    723,116.80x = 997,972.76 × 400,889.19
  4. Step 4: Simplify right side
    723,116.80x = 400,076,491,398.46
  5. Step 5: Solve for x
    x = 400,076,491,398.46/723,116.80
  6. Step 6: Final answer
    x = 553,266.76

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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.