Home / 898,029.75-1,239,284.49-490,140.58

Finding the Fourth Proportional to 898,029.75, 1,239,284.49 and 490,140.58

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Solution

The fourth proportional to 898,029.75, 1,239,284.49 and 490,140.58 is: 676,395.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,029.75 : 1,239,284.49 = 490,140.58 : x
  2. Step 2: Convert to fraction form
    898,029.75/1,239,284.49 = 490,140.58/x
  3. Step 3: Cross multiply
    898,029.75x = 1,239,284.49 × 490,140.58
  4. Step 4: Simplify right side
    898,029.75x = 607,423,616,101.02
  5. Step 5: Solve for x
    x = 607,423,616,101.02/898,029.75
  6. Step 6: Final answer
    x = 676,395.87

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Double scale
Find fourth proportional to 898,030.75, 1,239,285.87 and 490,141.58
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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.