Home / 829,921.60-1,245,496.80-331,643.20

Finding the Fourth Proportional to 829,921.60, 1,245,496.80 and 331,643.20

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Solution

The fourth proportional to 829,921.60, 1,245,496.80 and 331,643.20 is: 497,710.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,921.60 : 1,245,496.80 = 331,643.20 : x
  2. Step 2: Convert to fraction form
    829,921.60/1,245,496.80 = 331,643.20/x
  3. Step 3: Cross multiply
    829,921.60x = 1,245,496.80 × 331,643.20
  4. Step 4: Simplify right side
    829,921.60x = 413,060,544,341.76
  5. Step 5: Solve for x
    x = 413,060,544,341.76/829,921.60
  6. Step 6: Final answer
    x = 497,710.32

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1.5x scale

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.