Home / 687,197,842.31-948,325,050.78-373,926,658.84

Finding the Fourth Proportional to 687,197,842.31, 948,325,050.78 and 373,926,658.84

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Solution

The fourth proportional to 687,197,842.31, 948,325,050.78 and 373,926,658.84 is: 516,014,451.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,197,842.31 : 948,325,050.78 = 373,926,658.84 : x
  2. Step 2: Convert to fraction form
    687,197,842.31/948,325,050.78 = 373,926,658.84/x
  3. Step 3: Cross multiply
    687,197,842.31x = 948,325,050.78 × 373,926,658.84
  4. Step 4: Simplify right side
    687,197,842.31x = 354,604,017,728,676,928
  5. Step 5: Solve for x
    x = 354,604,017,728,676,928/687,197,842.31
  6. Step 6: Final answer
    x = 516,014,451.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.