Home / 689,871,514.30-952,026,556.62-392,513,749.30

Finding the Fourth Proportional to 689,871,514.30, 952,026,556.62 and 392,513,749.30

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Solution

The fourth proportional to 689,871,514.30, 952,026,556.62 and 392,513,749.30 is: 541,671,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,871,514.30 : 952,026,556.62 = 392,513,749.30 : x
  2. Step 2: Convert to fraction form
    689,871,514.30/952,026,556.62 = 392,513,749.30/x
  3. Step 3: Cross multiply
    689,871,514.30x = 952,026,556.62 × 392,513,749.30
  4. Step 4: Simplify right side
    689,871,514.30x = 373,683,513,172,084,928
  5. Step 5: Solve for x
    x = 373,683,513,172,084,928/689,871,514.30
  6. Step 6: Final answer
    x = 541,671,174.16

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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.