Home / 515,558,964.40-772,666,600.20-208,599,809.20

Finding the Fourth Proportional to 515,558,964.40, 772,666,600.20 and 208,599,809.20

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Solution

The fourth proportional to 515,558,964.40, 772,666,600.20 and 208,599,809.20 is: 312,627,878.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,558,964.40 : 772,666,600.20 = 208,599,809.20 : x
  2. Step 2: Convert to fraction form
    515,558,964.40/772,666,600.20 = 208,599,809.20/x
  3. Step 3: Cross multiply
    515,558,964.40x = 772,666,600.20 × 208,599,809.20
  4. Step 4: Simplify right side
    515,558,964.40x = 161,178,105,376,932,672
  5. Step 5: Solve for x
    x = 161,178,105,376,932,672/515,558,964.40
  6. Step 6: Final answer
    x = 312,627,878.68

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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.