Home / 898,375.76-1,239,739.60-490,457.89

Finding the Fourth Proportional to 898,375.76, 1,239,739.60 and 490,457.89

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Solution

The fourth proportional to 898,375.76, 1,239,739.60 and 490,457.89 is: 676,821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,375.76 : 1,239,739.60 = 490,457.89 : x
  2. Step 2: Convert to fraction form
    898,375.76/1,239,739.60 = 490,457.89/x
  3. Step 3: Cross multiply
    898,375.76x = 1,239,739.60 × 490,457.89
  4. Step 4: Simplify right side
    898,375.76x = 608,040,064,014.46
  5. Step 5: Solve for x
    x = 608,040,064,014.46/898,375.76
  6. Step 6: Final answer
    x = 676,821.54

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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.