Home / 898,128.81-1,239,454.31-490,258.17

Finding the Fourth Proportional to 898,128.81, 1,239,454.31 and 490,258.17

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Solution

The fourth proportional to 898,128.81, 1,239,454.31 and 490,258.17 is: 676,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,128.81 : 1,239,454.31 = 490,258.17 : x
  2. Step 2: Convert to fraction form
    898,128.81/1,239,454.31 = 490,258.17/x
  3. Step 3: Cross multiply
    898,128.81x = 1,239,454.31 × 490,258.17
  4. Step 4: Simplify right side
    898,128.81x = 607,652,599,367.92
  5. Step 5: Solve for x
    x = 607,652,599,367.92/898,128.81
  6. Step 6: Final answer
    x = 676,576.22

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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.