Home / 431,779,885.03-647,518,284.84-120,803,936.18

Finding the Fourth Proportional to 431,779,885.03, 647,518,284.84 and 120,803,936.18

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Solution

The fourth proportional to 431,779,885.03, 647,518,284.84 and 120,803,936.18 is: 181,163,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,779,885.03 : 647,518,284.84 = 120,803,936.18 : x
  2. Step 2: Convert to fraction form
    431,779,885.03/647,518,284.84 = 120,803,936.18/x
  3. Step 3: Cross multiply
    431,779,885.03x = 647,518,284.84 × 120,803,936.18
  4. Step 4: Simplify right side
    431,779,885.03x = 78,222,757,558,813,232
  5. Step 5: Solve for x
    x = 78,222,757,558,813,232/431,779,885.03
  6. Step 6: Final answer
    x = 181,163,505.46

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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.