Home / 689,871,522.32-952,026,567.68-392,513,757.28

Finding the Fourth Proportional to 689,871,522.32, 952,026,567.68 and 392,513,757.28

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Solution

The fourth proportional to 689,871,522.32, 952,026,567.68 and 392,513,757.28 is: 541,671,185.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,871,522.32 : 952,026,567.68 = 392,513,757.28 : x
  2. Step 2: Convert to fraction form
    689,871,522.32/952,026,567.68 = 392,513,757.28/x
  3. Step 3: Cross multiply
    689,871,522.32x = 952,026,567.68 × 392,513,757.28
  4. Step 4: Simplify right side
    689,871,522.32x = 373,683,525,110,458,944
  5. Step 5: Solve for x
    x = 373,683,525,110,458,944/689,871,522.32
  6. Step 6: Final answer
    x = 541,671,185.17

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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.