Home / 687,203,039.86-948,332,223.37-373,931,856.38

Finding the Fourth Proportional to 687,203,039.86, 948,332,223.37 and 373,931,856.38

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Solution

The fourth proportional to 687,203,039.86, 948,332,223.37 and 373,931,856.38 is: 516,021,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,203,039.86 : 948,332,223.37 = 373,931,856.38 : x
  2. Step 2: Convert to fraction form
    687,203,039.86/948,332,223.37 = 373,931,856.38/x
  3. Step 3: Cross multiply
    687,203,039.86x = 948,332,223.37 × 373,931,856.38
  4. Step 4: Simplify right side
    687,203,039.86x = 354,611,628,749,716,928
  5. Step 5: Solve for x
    x = 354,611,628,749,716,928/687,203,039.86
  6. Step 6: Final answer
    x = 516,021,624.15

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Double scale
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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.