Home / 642,025,566.44-961,403,491.81-423,011,920.26

Finding the Fourth Proportional to 642,025,566.44, 961,403,491.81 and 423,011,920.26

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Solution

The fourth proportional to 642,025,566.44, 961,403,491.81 and 423,011,920.26 is: 633,440,720.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,025,566.44 : 961,403,491.81 = 423,011,920.26 : x
  2. Step 2: Convert to fraction form
    642,025,566.44/961,403,491.81 = 423,011,920.26/x
  3. Step 3: Cross multiply
    642,025,566.44x = 961,403,491.81 × 423,011,920.26
  4. Step 4: Simplify right side
    642,025,566.44x = 406,685,137,215,217,280
  5. Step 5: Solve for x
    x = 406,685,137,215,217,280/642,025,566.44
  6. Step 6: Final answer
    x = 633,440,720.24

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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.