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Finding the Fourth Proportional to 898,480.40, 1,239,893.50 and 490,580.96

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Solution

The fourth proportional to 898,480.40, 1,239,893.50 and 490,580.96 is: 676,996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,480.40 : 1,239,893.50 = 490,580.96 : x
  2. Step 2: Convert to fraction form
    898,480.40/1,239,893.50 = 490,580.96/x
  3. Step 3: Cross multiply
    898,480.40x = 1,239,893.50 × 490,580.96
  4. Step 4: Simplify right side
    898,480.40x = 608,268,143,527.76
  5. Step 5: Solve for x
    x = 608,268,143,527.76/898,480.40
  6. Step 6: Final answer
    x = 676,996.56

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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.