Home / 427,153,868.94-640,792,202.85-132,072,001.05

Finding the Fourth Proportional to 427,153,868.94, 640,792,202.85 and 132,072,001.05

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Solution

The fourth proportional to 427,153,868.94, 640,792,202.85 and 132,072,001.05 is: 198,126,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,153,868.94 : 640,792,202.85 = 132,072,001.05 : x
  2. Step 2: Convert to fraction form
    427,153,868.94/640,792,202.85 = 132,072,001.05/x
  3. Step 3: Cross multiply
    427,153,868.94x = 640,792,202.85 × 132,072,001.05
  4. Step 4: Simplify right side
    427,153,868.94x = 84,630,708,487,637,008
  5. Step 5: Solve for x
    x = 84,630,708,487,637,008/427,153,868.94
  6. Step 6: Final answer
    x = 198,126,985.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.