Home / 318,917,087.60-478,375,631.40-76,579,991.60

Finding the Fourth Proportional to 318,917,087.60, 478,375,631.40 and 76,579,991.60

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Solution

The fourth proportional to 318,917,087.60, 478,375,631.40 and 76,579,991.60 is: 114,869,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,917,087.60 : 478,375,631.40 = 76,579,991.60 : x
  2. Step 2: Convert to fraction form
    318,917,087.60/478,375,631.40 = 76,579,991.60/x
  3. Step 3: Cross multiply
    318,917,087.60x = 478,375,631.40 × 76,579,991.60
  4. Step 4: Simplify right side
    318,917,087.60x = 36,634,001,834,256,688
  5. Step 5: Solve for x
    x = 36,634,001,834,256,688/318,917,087.60
  6. Step 6: Final answer
    x = 114,869,987.40

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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.