Home / 1,005,667,262.40-1,387,941,640.04-609,178,618.48

Finding the Fourth Proportional to 1,005,667,262.40, 1,387,941,640.04 and 609,178,618.48

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Solution

The fourth proportional to 1,005,667,262.40, 1,387,941,640.04 and 609,178,618.48 is: 840,739,678.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,667,262.40 : 1,387,941,640.04 = 609,178,618.48 : x
  2. Step 2: Convert to fraction form
    1,005,667,262.40/1,387,941,640.04 = 609,178,618.48/x
  3. Step 3: Cross multiply
    1,005,667,262.40x = 1,387,941,640.04 × 609,178,618.48
  4. Step 4: Simplify right side
    1,005,667,262.40x = 845,504,370,810,432,640
  5. Step 5: Solve for x
    x = 845,504,370,810,432,640/1,005,667,262.40
  6. Step 6: Final answer
    x = 840,739,678.44

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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.