Home / 1,238,554,394.10-1,857,831,591.15-687,556,365.30

Finding the Fourth Proportional to 1,238,554,394.10, 1,857,831,591.15 and 687,556,365.30

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Solution

The fourth proportional to 1,238,554,394.10, 1,857,831,591.15 and 687,556,365.30 is: 1,031,334,547.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,554,394.10 : 1,857,831,591.15 = 687,556,365.30 : x
  2. Step 2: Convert to fraction form
    1,238,554,394.10/1,857,831,591.15 = 687,556,365.30/x
  3. Step 3: Cross multiply
    1,238,554,394.10x = 1,857,831,591.15 × 687,556,365.30
  4. Step 4: Simplify right side
    1,238,554,394.10x = 1,277,363,936,150,609,664
  5. Step 5: Solve for x
    x = 1,277,363,936,150,609,664/1,238,554,394.10
  6. Step 6: Final answer
    x = 1,031,334,547.95

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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.