Home / 518,051,428.90-776,977,610.55-154,557,643.30

Finding the Fourth Proportional to 518,051,428.90, 776,977,610.55 and 154,557,643.30

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Solution

The fourth proportional to 518,051,428.90, 776,977,610.55 and 154,557,643.30 is: 231,806,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,051,428.90 : 776,977,610.55 = 154,557,643.30 : x
  2. Step 2: Convert to fraction form
    518,051,428.90/776,977,610.55 = 154,557,643.30/x
  3. Step 3: Cross multiply
    518,051,428.90x = 776,977,610.55 × 154,557,643.30
  4. Step 4: Simplify right side
    518,051,428.90x = 120,087,828,383,473,216
  5. Step 5: Solve for x
    x = 120,087,828,383,473,216/518,051,428.90
  6. Step 6: Final answer
    x = 231,806,769.92

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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.