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Finding the Fourth Proportional to 898,881.84, 1,240,449.56 and 490,984

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Solution

The fourth proportional to 898,881.84, 1,240,449.56 and 490,984 is: 677,553.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,881.84 : 1,240,449.56 = 490,984 : x
  2. Step 2: Convert to fraction form
    898,881.84/1,240,449.56 = 490,984/x
  3. Step 3: Cross multiply
    898,881.84x = 1,240,449.56 × 490,984
  4. Step 4: Simplify right side
    898,881.84x = 609,040,886,767.04
  5. Step 5: Solve for x
    x = 609,040,886,767.04/898,881.84
  6. Step 6: Final answer
    x = 677,553.89

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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.