Home / 898,800.32-1,240,353.78-490,913.90

Finding the Fourth Proportional to 898,800.32, 1,240,353.78 and 490,913.90

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Solution

The fourth proportional to 898,800.32, 1,240,353.78 and 490,913.90 is: 677,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,800.32 : 1,240,353.78 = 490,913.90 : x
  2. Step 2: Convert to fraction form
    898,800.32/1,240,353.78 = 490,913.90/x
  3. Step 3: Cross multiply
    898,800.32x = 1,240,353.78 × 490,913.90
  4. Step 4: Simplify right side
    898,800.32x = 608,906,911,519.54
  5. Step 5: Solve for x
    x = 608,906,911,519.54/898,800.32
  6. Step 6: Final answer
    x = 677,466.28

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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.