Home / 640,178,110.86-883,446,689.43-346,822,678.86

Finding the Fourth Proportional to 640,178,110.86, 883,446,689.43 and 346,822,678.86

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Solution

The fourth proportional to 640,178,110.86, 883,446,689.43 and 346,822,678.86 is: 478,615,782.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,178,110.86 : 883,446,689.43 = 346,822,678.86 : x
  2. Step 2: Convert to fraction form
    640,178,110.86/883,446,689.43 = 346,822,678.86/x
  3. Step 3: Cross multiply
    640,178,110.86x = 883,446,689.43 × 346,822,678.86
  4. Step 4: Simplify right side
    640,178,110.86x = 306,399,347,458,111,040
  5. Step 5: Solve for x
    x = 306,399,347,458,111,040/640,178,110.86
  6. Step 6: Final answer
    x = 478,615,782.48

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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.