Home / 431,779,927.23-647,518,348.11-120,803,978.37

Finding the Fourth Proportional to 431,779,927.23, 647,518,348.11 and 120,803,978.37

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Solution

The fourth proportional to 431,779,927.23, 647,518,348.11 and 120,803,978.37 is: 181,163,568.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,779,927.23 : 647,518,348.11 = 120,803,978.37 : x
  2. Step 2: Convert to fraction form
    431,779,927.23/647,518,348.11 = 120,803,978.37/x
  3. Step 3: Cross multiply
    431,779,927.23x = 647,518,348.11 × 120,803,978.37
  4. Step 4: Simplify right side
    431,779,927.23x = 78,222,792,519,258,576
  5. Step 5: Solve for x
    x = 78,222,792,519,258,576/431,779,927.23
  6. Step 6: Final answer
    x = 181,163,568.72

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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.