Home / 1,238,554,418.60-1,857,831,627.90-687,556,389.80

Finding the Fourth Proportional to 1,238,554,418.60, 1,857,831,627.90 and 687,556,389.80

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Solution

The fourth proportional to 1,238,554,418.60, 1,857,831,627.90 and 687,556,389.80 is: 1,031,334,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,554,418.60 : 1,857,831,627.90 = 687,556,389.80 : x
  2. Step 2: Convert to fraction form
    1,238,554,418.60/1,857,831,627.90 = 687,556,389.80/x
  3. Step 3: Cross multiply
    1,238,554,418.60x = 1,857,831,627.90 × 687,556,389.80
  4. Step 4: Simplify right side
    1,238,554,418.60x = 1,277,364,006,935,181,056
  5. Step 5: Solve for x
    x = 1,277,364,006,935,181,056/1,238,554,418.60
  6. Step 6: Final answer
    x = 1,031,334,584.70

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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.