Home / 376,899,629.81-520,114,030.54-209,632,292.96

Finding the Fourth Proportional to 376,899,629.81, 520,114,030.54 and 209,632,292.96

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Solution

The fourth proportional to 376,899,629.81, 520,114,030.54 and 209,632,292.96 is: 289,288,415.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,899,629.81 : 520,114,030.54 = 209,632,292.96 : x
  2. Step 2: Convert to fraction form
    376,899,629.81/520,114,030.54 = 209,632,292.96/x
  3. Step 3: Cross multiply
    376,899,629.81x = 520,114,030.54 × 209,632,292.96
  4. Step 4: Simplify right side
    376,899,629.81x = 109,032,696,819,643,024
  5. Step 5: Solve for x
    x = 109,032,696,819,643,024/376,899,629.81
  6. Step 6: Final answer
    x = 289,288,415.79

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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.