Home / 723,130.20-997,814.88-400,840.20

Finding the Fourth Proportional to 723,130.20, 997,814.88 and 400,840.20

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Solution

The fourth proportional to 723,130.20, 997,814.88 and 400,840.20 is: 553,101.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,130.20 : 997,814.88 = 400,840.20 : x
  2. Step 2: Convert to fraction form
    723,130.20/997,814.88 = 400,840.20/x
  3. Step 3: Cross multiply
    723,130.20x = 997,814.88 × 400,840.20
  4. Step 4: Simplify right side
    723,130.20x = 399,964,316,062.18
  5. Step 5: Solve for x
    x = 399,964,316,062.18/723,130.20
  6. Step 6: Final answer
    x = 553,101.39

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Double scale
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Similar ratio
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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.