Home / 636,144,811.20-954,217,216.80-515,212,459.20

Finding the Fourth Proportional to 636,144,811.20, 954,217,216.80 and 515,212,459.20

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Solution

The fourth proportional to 636,144,811.20, 954,217,216.80 and 515,212,459.20 is: 772,818,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,144,811.20 : 954,217,216.80 = 515,212,459.20 : x
  2. Step 2: Convert to fraction form
    636,144,811.20/954,217,216.80 = 515,212,459.20/x
  3. Step 3: Cross multiply
    636,144,811.20x = 954,217,216.80 × 515,212,459.20
  4. Step 4: Simplify right side
    636,144,811.20x = 491,624,598,878,507,520
  5. Step 5: Solve for x
    x = 491,624,598,878,507,520/636,144,811.20
  6. Step 6: Final answer
    x = 772,818,688.80

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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.