Home / 642,025,539.24-961,403,452.11-423,011,893.38

Finding the Fourth Proportional to 642,025,539.24, 961,403,452.11 and 423,011,893.38

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Solution

The fourth proportional to 642,025,539.24, 961,403,452.11 and 423,011,893.38 is: 633,440,680.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,025,539.24 : 961,403,452.11 = 423,011,893.38 : x
  2. Step 2: Convert to fraction form
    642,025,539.24/961,403,452.11 = 423,011,893.38/x
  3. Step 3: Cross multiply
    642,025,539.24x = 961,403,452.11 × 423,011,893.38
  4. Step 4: Simplify right side
    642,025,539.24x = 406,685,094,579,119,232
  5. Step 5: Solve for x
    x = 406,685,094,579,119,232/642,025,539.24
  6. Step 6: Final answer
    x = 633,440,680.66

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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.