Home / 642,025,701.35-961,403,695.40-423,012,056.12

Finding the Fourth Proportional to 642,025,701.35, 961,403,695.40 and 423,012,056.12

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Solution

The fourth proportional to 642,025,701.35, 961,403,695.40 and 423,012,056.12 is: 633,440,924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,025,701.35 : 961,403,695.40 = 423,012,056.12 : x
  2. Step 2: Convert to fraction form
    642,025,701.35/961,403,695.40 = 423,012,056.12/x
  3. Step 3: Cross multiply
    642,025,701.35x = 961,403,695.40 × 423,012,056.12
  4. Step 4: Simplify right side
    642,025,701.35x = 406,685,353,948,770,752
  5. Step 5: Solve for x
    x = 406,685,353,948,770,752/642,025,701.35
  6. Step 6: Final answer
    x = 633,440,924.71

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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.