Home / 401,017,106.52-601,534,058.40-128,387,086.20

Finding the Fourth Proportional to 401,017,106.52, 601,534,058.40 and 128,387,086.20

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Solution

The fourth proportional to 401,017,106.52, 601,534,058.40 and 128,387,086.20 is: 192,583,318.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,017,106.52 : 601,534,058.40 = 128,387,086.20 : x
  2. Step 2: Convert to fraction form
    401,017,106.52/601,534,058.40 = 128,387,086.20/x
  3. Step 3: Cross multiply
    401,017,106.52x = 601,534,058.40 × 128,387,086.20
  4. Step 4: Simplify right side
    401,017,106.52x = 77,229,205,008,036,640
  5. Step 5: Solve for x
    x = 77,229,205,008,036,640/401,017,106.52
  6. Step 6: Final answer
    x = 192,583,318.15

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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.