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Finding the Fourth Proportional to 634,878.78, 876,158.00 and 348,409.13

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Solution

The fourth proportional to 634,878.78, 876,158.00 and 348,409.13 is: 480,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,878.78 : 876,158.00 = 348,409.13 : x
  2. Step 2: Convert to fraction form
    634,878.78/876,158.00 = 348,409.13/x
  3. Step 3: Cross multiply
    634,878.78x = 876,158.00 × 348,409.13
  4. Step 4: Simplify right side
    634,878.78x = 305,261,440,399.70
  5. Step 5: Solve for x
    x = 305,261,440,399.70/634,878.78
  6. Step 6: Final answer
    x = 480,818.46

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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.