Home / 1,078,020,001.20-1,617,030,001.80-432,251,194.80

Finding the Fourth Proportional to 1,078,020,001.20, 1,617,030,001.80 and 432,251,194.80

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Solution

The fourth proportional to 1,078,020,001.20, 1,617,030,001.80 and 432,251,194.80 is: 648,376,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,020,001.20 : 1,617,030,001.80 = 432,251,194.80 : x
  2. Step 2: Convert to fraction form
    1,078,020,001.20/1,617,030,001.80 = 432,251,194.80/x
  3. Step 3: Cross multiply
    1,078,020,001.20x = 1,617,030,001.80 × 432,251,194.80
  4. Step 4: Simplify right side
    1,078,020,001.20x = 698,963,150,305,496,192
  5. Step 5: Solve for x
    x = 698,963,150,305,496,192/1,078,020,001.20
  6. Step 6: Final answer
    x = 648,376,792.20

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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.