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Finding the Fourth Proportional to 634,838.64, 876,074.94 and 348,363.54

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Solution

The fourth proportional to 634,838.64, 876,074.94 and 348,363.54 is: 480,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,838.64 : 876,074.94 = 348,363.54 : x
  2. Step 2: Convert to fraction form
    634,838.64/876,074.94 = 348,363.54/x
  3. Step 3: Cross multiply
    634,838.64x = 876,074.94 × 348,363.54
  4. Step 4: Simplify right side
    634,838.64x = 305,192,567,403.69
  5. Step 5: Solve for x
    x = 305,192,567,403.69/634,838.64
  6. Step 6: Final answer
    x = 480,740.38

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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.