Home / 1,221,257,987.60-1,832,661,790.20-521,755,393.58

Finding the Fourth Proportional to 1,221,257,987.60, 1,832,661,790.20 and 521,755,393.58

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Solution

The fourth proportional to 1,221,257,987.60, 1,832,661,790.20 and 521,755,393.58 is: 782,964,110.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,257,987.60 : 1,832,661,790.20 = 521,755,393.58 : x
  2. Step 2: Convert to fraction form
    1,221,257,987.60/1,832,661,790.20 = 521,755,393.58/x
  3. Step 3: Cross multiply
    1,221,257,987.60x = 1,832,661,790.20 × 521,755,393.58
  4. Step 4: Simplify right side
    1,221,257,987.60x = 956,201,173,644,828,416
  5. Step 5: Solve for x
    x = 956,201,173,644,828,416/1,221,257,987.60
  6. Step 6: Final answer
    x = 782,964,110.25

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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.