Home / 640,178,150.11-883,446,743.60-346,822,718.11

Finding the Fourth Proportional to 640,178,150.11, 883,446,743.60 and 346,822,718.11

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Solution

The fourth proportional to 640,178,150.11, 883,446,743.60 and 346,822,718.11 is: 478,615,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,178,150.11 : 883,446,743.60 = 346,822,718.11 : x
  2. Step 2: Convert to fraction form
    640,178,150.11/883,446,743.60 = 346,822,718.11/x
  3. Step 3: Cross multiply
    640,178,150.11x = 883,446,743.60 × 346,822,718.11
  4. Step 4: Simplify right side
    640,178,150.11x = 306,399,400,920,780,288
  5. Step 5: Solve for x
    x = 306,399,400,920,780,288/640,178,150.11
  6. Step 6: Final answer
    x = 478,615,836.65

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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.