Home / 698,468.40-1,047,848.40-398,703.60

Finding the Fourth Proportional to 698,468.40, 1,047,848.40 and 398,703.60

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Solution

The fourth proportional to 698,468.40, 1,047,848.40 and 398,703.60 is: 598,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,468.40 : 1,047,848.40 = 398,703.60 : x
  2. Step 2: Convert to fraction form
    698,468.40/1,047,848.40 = 398,703.60/x
  3. Step 3: Cross multiply
    698,468.40x = 1,047,848.40 × 398,703.60
  4. Step 4: Simplify right side
    698,468.40x = 417,780,929,334.24
  5. Step 5: Solve for x
    x = 417,780,929,334.24/698,468.40
  6. Step 6: Final answer
    x = 598,138.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.