Home / 780,109,354.90-1,076,550,650-427,677,778.59

Finding the Fourth Proportional to 780,109,354.90, 1,076,550,650 and 427,677,778.59

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Solution

The fourth proportional to 780,109,354.90, 1,076,550,650 and 427,677,778.59 is: 590,195,192.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,109,354.90 : 1,076,550,650 = 427,677,778.59 : x
  2. Step 2: Convert to fraction form
    780,109,354.90/1,076,550,650 = 427,677,778.59/x
  3. Step 3: Cross multiply
    780,109,354.90x = 1,076,550,650 × 427,677,778.59
  4. Step 4: Simplify right side
    780,109,354.90x = 460,416,790,531,620,544
  5. Step 5: Solve for x
    x = 460,416,790,531,620,544/780,109,354.90
  6. Step 6: Final answer
    x = 590,195,192.05

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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.