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Finding the Fourth Proportional to 723,608.12, 998,612.54 and 401,299.01

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Solution

The fourth proportional to 723,608.12, 998,612.54 and 401,299.01 is: 553,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,608.12 : 998,612.54 = 401,299.01 : x
  2. Step 2: Convert to fraction form
    723,608.12/998,612.54 = 401,299.01/x
  3. Step 3: Cross multiply
    723,608.12x = 998,612.54 × 401,299.01
  4. Step 4: Simplify right side
    723,608.12x = 400,742,223,675.59
  5. Step 5: Solve for x
    x = 400,742,223,675.59/723,608.12
  6. Step 6: Final answer
    x = 553,811.12

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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.