Home / 463,845,421.28-640,107,090.78-255,005,117.12

Finding the Fourth Proportional to 463,845,421.28, 640,107,090.78 and 255,005,117.12

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Solution

The fourth proportional to 463,845,421.28, 640,107,090.78 and 255,005,117.12 is: 351,907,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,845,421.28 : 640,107,090.78 = 255,005,117.12 : x
  2. Step 2: Convert to fraction form
    463,845,421.28/640,107,090.78 = 255,005,117.12/x
  3. Step 3: Cross multiply
    463,845,421.28x = 640,107,090.78 × 255,005,117.12
  4. Step 4: Simplify right side
    463,845,421.28x = 163,230,583,654,340,384
  5. Step 5: Solve for x
    x = 163,230,583,654,340,384/463,845,421.28
  6. Step 6: Final answer
    x = 351,907,286.71

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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.