Home / 400,400.67-553,153.07-262,905.79

Finding the Fourth Proportional to 400,400.67, 553,153.07 and 262,905.79

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Solution

The fourth proportional to 400,400.67, 553,153.07 and 262,905.79 is: 363,204.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,400.67 : 553,153.07 = 262,905.79 : x
  2. Step 2: Convert to fraction form
    400,400.67/553,153.07 = 262,905.79/x
  3. Step 3: Cross multiply
    400,400.67x = 553,153.07 × 262,905.79
  4. Step 4: Simplify right side
    400,400.67x = 145,427,144,859.28
  5. Step 5: Solve for x
    x = 145,427,144,859.28/400,400.67
  6. Step 6: Final answer
    x = 363,204.05

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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.