Home / 515,330,147.70-772,995,221.55-308,705,886.90

Finding the Fourth Proportional to 515,330,147.70, 772,995,221.55 and 308,705,886.90

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Solution

The fourth proportional to 515,330,147.70, 772,995,221.55 and 308,705,886.90 is: 463,058,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,330,147.70 : 772,995,221.55 = 308,705,886.90 : x
  2. Step 2: Convert to fraction form
    515,330,147.70/772,995,221.55 = 308,705,886.90/x
  3. Step 3: Cross multiply
    515,330,147.70x = 772,995,221.55 × 308,705,886.90
  4. Step 4: Simplify right side
    515,330,147.70x = 238,628,175,438,054,720
  5. Step 5: Solve for x
    x = 238,628,175,438,054,720/515,330,147.70
  6. Step 6: Final answer
    x = 463,058,830.35

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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.