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Finding the Fourth Proportional to 634,813.28, 876,039.90 and 348,338.16

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Solution

The fourth proportional to 634,813.28, 876,039.90 and 348,338.16 is: 480,705.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,813.28 : 876,039.90 = 348,338.16 : x
  2. Step 2: Convert to fraction form
    634,813.28/876,039.90 = 348,338.16/x
  3. Step 3: Cross multiply
    634,813.28x = 876,039.90 × 348,338.16
  4. Step 4: Simplify right side
    634,813.28x = 305,158,126,852.58
  5. Step 5: Solve for x
    x = 305,158,126,852.58/634,813.28
  6. Step 6: Final answer
    x = 480,705.33

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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.