Home / 640,709,410.83-884,213,317.16-358,435,012.78

Finding the Fourth Proportional to 640,709,410.83, 884,213,317.16 and 358,435,012.78

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Solution

The fourth proportional to 640,709,410.83, 884,213,317.16 and 358,435,012.78 is: 494,659,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,709,410.83 : 884,213,317.16 = 358,435,012.78 : x
  2. Step 2: Convert to fraction form
    640,709,410.83/884,213,317.16 = 358,435,012.78/x
  3. Step 3: Cross multiply
    640,709,410.83x = 884,213,317.16 × 358,435,012.78
  4. Step 4: Simplify right side
    640,709,410.83x = 316,933,011,636,490,752
  5. Step 5: Solve for x
    x = 316,933,011,636,490,752/640,709,410.83
  6. Step 6: Final answer
    x = 494,659,523.15

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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.