Home / 898,738.57-1,240,208.49-490,759.21

Finding the Fourth Proportional to 898,738.57, 1,240,208.49 and 490,759.21

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Solution

The fourth proportional to 898,738.57, 1,240,208.49 and 490,759.21 is: 677,220.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,738.57 : 1,240,208.49 = 490,759.21 : x
  2. Step 2: Convert to fraction form
    898,738.57/1,240,208.49 = 490,759.21/x
  3. Step 3: Cross multiply
    898,738.57x = 1,240,208.49 × 490,759.21
  4. Step 4: Simplify right side
    898,738.57x = 608,643,738,787.69
  5. Step 5: Solve for x
    x = 608,643,738,787.69/898,738.57
  6. Step 6: Final answer
    x = 677,220.00

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Double scale
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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.