Home / 376,899,628.31-520,114,028.47-209,632,291.46

Finding the Fourth Proportional to 376,899,628.31, 520,114,028.47 and 209,632,291.46

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Solution

The fourth proportional to 376,899,628.31, 520,114,028.47 and 209,632,291.46 is: 289,288,413.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,899,628.31 : 520,114,028.47 = 209,632,291.46 : x
  2. Step 2: Convert to fraction form
    376,899,628.31/520,114,028.47 = 209,632,291.46/x
  3. Step 3: Cross multiply
    376,899,628.31x = 520,114,028.47 × 209,632,291.46
  4. Step 4: Simplify right side
    376,899,628.31x = 109,032,695,605,009,040
  5. Step 5: Solve for x
    x = 109,032,695,605,009,040/376,899,628.31
  6. Step 6: Final answer
    x = 289,288,413.72

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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.