Home / 687,197,838.94-948,325,046.12-373,926,655.46

Finding the Fourth Proportional to 687,197,838.94, 948,325,046.12 and 373,926,655.46

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Solution

The fourth proportional to 687,197,838.94, 948,325,046.12 and 373,926,655.46 is: 516,014,446.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,197,838.94 : 948,325,046.12 = 373,926,655.46 : x
  2. Step 2: Convert to fraction form
    687,197,838.94/948,325,046.12 = 373,926,655.46/x
  3. Step 3: Cross multiply
    687,197,838.94x = 948,325,046.12 × 373,926,655.46
  4. Step 4: Simplify right side
    687,197,838.94x = 354,604,012,786,508,992
  5. Step 5: Solve for x
    x = 354,604,012,786,508,992/687,197,838.94
  6. Step 6: Final answer
    x = 516,014,446.92

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1.5x scale

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.