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Finding the Fourth Proportional to 654,879,891.96, 903,710,522.70 and 361,518,161.40

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Solution

The fourth proportional to 654,879,891.96, 903,710,522.70 and 361,518,161.40 is: 498,881,963.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,879,891.96 : 903,710,522.70 = 361,518,161.40 : x
  2. Step 2: Convert to fraction form
    654,879,891.96/903,710,522.70 = 361,518,161.40/x
  3. Step 3: Cross multiply
    654,879,891.96x = 903,710,522.70 × 361,518,161.40
  4. Step 4: Simplify right side
    654,879,891.96x = 326,707,766,604,336,960
  5. Step 5: Solve for x
    x = 326,707,766,604,336,960/654,879,891.96
  6. Step 6: Final answer
    x = 498,881,963.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.