Home / 815,998,661.30-1,223,878,417.72-401,364,185.87

Finding the Fourth Proportional to 815,998,661.30, 1,223,878,417.72 and 401,364,185.87

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Solution

The fourth proportional to 815,998,661.30, 1,223,878,417.72 and 401,364,185.87 is: 601,987,463.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,998,661.30 : 1,223,878,417.72 = 401,364,185.87 : x
  2. Step 2: Convert to fraction form
    815,998,661.30/1,223,878,417.72 = 401,364,185.87/x
  3. Step 3: Cross multiply
    815,998,661.30x = 1,223,878,417.72 × 401,364,185.87
  4. Step 4: Simplify right side
    815,998,661.30x = 491,220,964,732,051,584
  5. Step 5: Solve for x
    x = 491,220,964,732,051,584/815,998,661.30
  6. Step 6: Final answer
    x = 601,987,463.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.