Home / 898,280.56-1,239,608.64-490,390.48

Finding the Fourth Proportional to 898,280.56, 1,239,608.64 and 490,390.48

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Solution

The fourth proportional to 898,280.56, 1,239,608.64 and 490,390.48 is: 676,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,280.56 : 1,239,608.64 = 490,390.48 : x
  2. Step 2: Convert to fraction form
    898,280.56/1,239,608.64 = 490,390.48/x
  3. Step 3: Cross multiply
    898,280.56x = 1,239,608.64 × 490,390.48
  4. Step 4: Simplify right side
    898,280.56x = 607,892,275,981.75
  5. Step 5: Solve for x
    x = 607,892,275,981.75/898,280.56
  6. Step 6: Final answer
    x = 676,728.74

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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.