Home / 401,361,680.70-602,042,521.05-128,760,003.90

Finding the Fourth Proportional to 401,361,680.70, 602,042,521.05 and 128,760,003.90

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Solution

The fourth proportional to 401,361,680.70, 602,042,521.05 and 128,760,003.90 is: 193,140,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,361,680.70 : 602,042,521.05 = 128,760,003.90 : x
  2. Step 2: Convert to fraction form
    401,361,680.70/602,042,521.05 = 128,760,003.90/x
  3. Step 3: Cross multiply
    401,361,680.70x = 602,042,521.05 × 128,760,003.90
  4. Step 4: Simplify right side
    401,361,680.70x = 77,518,997,358,363,824
  5. Step 5: Solve for x
    x = 77,518,997,358,363,824/401,361,680.70
  6. Step 6: Final answer
    x = 193,140,005.85

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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.