Home / 520,048,021.51-780,061,103.22-126,577,043.13

Finding the Fourth Proportional to 520,048,021.51, 780,061,103.22 and 126,577,043.13

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Solution

The fourth proportional to 520,048,021.51, 780,061,103.22 and 126,577,043.13 is: 189,862,904.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,048,021.51 : 780,061,103.22 = 126,577,043.13 : x
  2. Step 2: Convert to fraction form
    520,048,021.51/780,061,103.22 = 126,577,043.13/x
  3. Step 3: Cross multiply
    520,048,021.51x = 780,061,103.22 × 126,577,043.13
  4. Step 4: Simplify right side
    520,048,021.51x = 98,737,827,906,313,328
  5. Step 5: Solve for x
    x = 98,737,827,906,313,328/520,048,021.51
  6. Step 6: Final answer
    x = 189,862,904.62

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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.