Home / 640,709,392.31-884,213,291.52-358,434,994.13

Finding the Fourth Proportional to 640,709,392.31, 884,213,291.52 and 358,434,994.13

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Solution

The fourth proportional to 640,709,392.31, 884,213,291.52 and 358,434,994.13 is: 494,659,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,709,392.31 : 884,213,291.52 = 358,434,994.13 : x
  2. Step 2: Convert to fraction form
    640,709,392.31/884,213,291.52 = 358,434,994.13/x
  3. Step 3: Cross multiply
    640,709,392.31x = 884,213,291.52 × 358,434,994.13
  4. Step 4: Simplify right side
    640,709,392.31x = 316,932,985,951,218,112
  5. Step 5: Solve for x
    x = 316,932,985,951,218,112/640,709,392.31
  6. Step 6: Final answer
    x = 494,659,497.36

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Double scale
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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.