Home / 898,578.96-1,240,089.62-490,718.76

Finding the Fourth Proportional to 898,578.96, 1,240,089.62 and 490,718.76

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Solution

The fourth proportional to 898,578.96, 1,240,089.62 and 490,718.76 is: 677,219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,578.96 : 1,240,089.62 = 490,718.76 : x
  2. Step 2: Convert to fraction form
    898,578.96/1,240,089.62 = 490,718.76/x
  3. Step 3: Cross multiply
    898,578.96x = 1,240,089.62 × 490,718.76
  4. Step 4: Simplify right side
    898,578.96x = 608,535,240,615.27
  5. Step 5: Solve for x
    x = 608,535,240,615.27/898,578.96
  6. Step 6: Final answer
    x = 677,219.55

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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.