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Finding the Fourth Proportional to 692,803.32, 955,965.96 and 420,729.36

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Solution

The fourth proportional to 692,803.32, 955,965.96 and 420,729.36 is: 580,544.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,803.32 : 955,965.96 = 420,729.36 : x
  2. Step 2: Convert to fraction form
    692,803.32/955,965.96 = 420,729.36/x
  3. Step 3: Cross multiply
    692,803.32x = 955,965.96 × 420,729.36
  4. Step 4: Simplify right side
    692,803.32x = 402,202,946,532.59
  5. Step 5: Solve for x
    x = 402,202,946,532.59/692,803.32
  6. Step 6: Final answer
    x = 580,544.20

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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.