Home / 1,238,554,427.10-1,857,831,640.65-687,556,398.30

Finding the Fourth Proportional to 1,238,554,427.10, 1,857,831,640.65 and 687,556,398.30

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Solution

The fourth proportional to 1,238,554,427.10, 1,857,831,640.65 and 687,556,398.30 is: 1,031,334,597.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,554,427.10 : 1,857,831,640.65 = 687,556,398.30 : x
  2. Step 2: Convert to fraction form
    1,238,554,427.10/1,857,831,640.65 = 687,556,398.30/x
  3. Step 3: Cross multiply
    1,238,554,427.10x = 1,857,831,640.65 × 687,556,398.30
  4. Step 4: Simplify right side
    1,238,554,427.10x = 1,277,364,031,493,093,888
  5. Step 5: Solve for x
    x = 1,277,364,031,493,093,888/1,238,554,427.10
  6. Step 6: Final answer
    x = 1,031,334,597.45

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Double scale
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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.