Home / 723,107.39-997,936.23-400,831.07

Finding the Fourth Proportional to 723,107.39, 997,936.23 and 400,831.07

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Solution

The fourth proportional to 723,107.39, 997,936.23 and 400,831.07 is: 553,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,107.39 : 997,936.23 = 400,831.07 : x
  2. Step 2: Convert to fraction form
    723,107.39/997,936.23 = 400,831.07/x
  3. Step 3: Cross multiply
    723,107.39x = 997,936.23 × 400,831.07
  4. Step 4: Simplify right side
    723,107.39x = 400,003,846,862.67
  5. Step 5: Solve for x
    x = 400,003,846,862.67/723,107.39
  6. Step 6: Final answer
    x = 553,173.50

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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.