Home / 508,779,266.80-763,168,900.20-379,639,103.80

Finding the Fourth Proportional to 508,779,266.80, 763,168,900.20 and 379,639,103.80

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Solution

The fourth proportional to 508,779,266.80, 763,168,900.20 and 379,639,103.80 is: 569,458,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,779,266.80 : 763,168,900.20 = 379,639,103.80 : x
  2. Step 2: Convert to fraction form
    508,779,266.80/763,168,900.20 = 379,639,103.80/x
  3. Step 3: Cross multiply
    508,779,266.80x = 763,168,900.20 × 379,639,103.80
  4. Step 4: Simplify right side
    508,779,266.80x = 289,728,757,319,959,680
  5. Step 5: Solve for x
    x = 289,728,757,319,959,680/508,779,266.80
  6. Step 6: Final answer
    x = 569,458,655.70

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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.