Home / 518,009,809.10-776,996,742.45-129,836,036.30

Finding the Fourth Proportional to 518,009,809.10, 776,996,742.45 and 129,836,036.30

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Solution

The fourth proportional to 518,009,809.10, 776,996,742.45 and 129,836,036.30 is: 194,749,550.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,009,809.10 : 776,996,742.45 = 129,836,036.30 : x
  2. Step 2: Convert to fraction form
    518,009,809.10/776,996,742.45 = 129,836,036.30/x
  3. Step 3: Cross multiply
    518,009,809.10x = 776,996,742.45 × 129,836,036.30
  4. Step 4: Simplify right side
    518,009,809.10x = 100,882,177,257,719,952
  5. Step 5: Solve for x
    x = 100,882,177,257,719,952/518,009,809.10
  6. Step 6: Final answer
    x = 194,749,550.08

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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.