Home / 656,795.20-906,378.98-354,989.20

Finding the Fourth Proportional to 656,795.20, 906,378.98 and 354,989.20

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Solution

The fourth proportional to 656,795.20, 906,378.98 and 354,989.20 is: 489,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,795.20 : 906,378.98 = 354,989.20 : x
  2. Step 2: Convert to fraction form
    656,795.20/906,378.98 = 354,989.20/x
  3. Step 3: Cross multiply
    656,795.20x = 906,378.98 × 354,989.20
  4. Step 4: Simplify right side
    656,795.20x = 321,754,749,007.02
  5. Step 5: Solve for x
    x = 321,754,749,007.02/656,795.20
  6. Step 6: Final answer
    x = 489,885.96

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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.