Home / 431,779,882.78-647,518,281.47-120,803,933.93

Finding the Fourth Proportional to 431,779,882.78, 647,518,281.47 and 120,803,933.93

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Solution

The fourth proportional to 431,779,882.78, 647,518,281.47 and 120,803,933.93 is: 181,163,502.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,779,882.78 : 647,518,281.47 = 120,803,933.93 : x
  2. Step 2: Convert to fraction form
    431,779,882.78/647,518,281.47 = 120,803,933.93/x
  3. Step 3: Cross multiply
    431,779,882.78x = 647,518,281.47 × 120,803,933.93
  4. Step 4: Simplify right side
    431,779,882.78x = 78,222,755,694,183,808
  5. Step 5: Solve for x
    x = 78,222,755,694,183,808/431,779,882.78
  6. Step 6: Final answer
    x = 181,163,502.09

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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.