Home / 689,871,820.68-952,026,980.58-392,514,056.55

Finding the Fourth Proportional to 689,871,820.68, 952,026,980.58 and 392,514,056.55

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Solution

The fourth proportional to 689,871,820.68, 952,026,980.58 and 392,514,056.55 is: 541,671,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,871,820.68 : 952,026,980.58 = 392,514,056.55 : x
  2. Step 2: Convert to fraction form
    689,871,820.68/952,026,980.58 = 392,514,056.55/x
  3. Step 3: Cross multiply
    689,871,820.68x = 952,026,980.58 × 392,514,056.55
  4. Step 4: Simplify right side
    689,871,820.68x = 373,683,972,092,503,872
  5. Step 5: Solve for x
    x = 373,683,972,092,503,872/689,871,820.68
  6. Step 6: Final answer
    x = 541,671,598.83

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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.