Home / 1,015,504,411.50-1,400,802,351.39-638,564,431.14

Finding the Fourth Proportional to 1,015,504,411.50, 1,400,802,351.39 and 638,564,431.14

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Solution

The fourth proportional to 1,015,504,411.50, 1,400,802,351.39 and 638,564,431.14 is: 880,845,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,504,411.50 : 1,400,802,351.39 = 638,564,431.14 : x
  2. Step 2: Convert to fraction form
    1,015,504,411.50/1,400,802,351.39 = 638,564,431.14/x
  3. Step 3: Cross multiply
    1,015,504,411.50x = 1,400,802,351.39 × 638,564,431.14
  4. Step 4: Simplify right side
    1,015,504,411.50x = 894,502,556,654,929,792
  5. Step 5: Solve for x
    x = 894,502,556,654,929,792/1,015,504,411.50
  6. Step 6: Final answer
    x = 880,845,564.55

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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.