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Finding the Fourth Proportional to 898,701.48, 1,240,208.58 and 490,809

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Solution

The fourth proportional to 898,701.48, 1,240,208.58 and 490,809 is: 677,316.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,701.48 : 1,240,208.58 = 490,809 : x
  2. Step 2: Convert to fraction form
    898,701.48/1,240,208.58 = 490,809/x
  3. Step 3: Cross multiply
    898,701.48x = 1,240,208.58 × 490,809
  4. Step 4: Simplify right side
    898,701.48x = 608,705,532,941.22
  5. Step 5: Solve for x
    x = 608,705,532,941.22/898,701.48
  6. Step 6: Final answer
    x = 677,316.71

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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.