Home / 828,005.80-1,242,008.70-688,037.80

Finding the Fourth Proportional to 828,005.80, 1,242,008.70 and 688,037.80

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Solution

The fourth proportional to 828,005.80, 1,242,008.70 and 688,037.80 is: 1,032,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,005.80 : 1,242,008.70 = 688,037.80 : x
  2. Step 2: Convert to fraction form
    828,005.80/1,242,008.70 = 688,037.80/x
  3. Step 3: Cross multiply
    828,005.80x = 1,242,008.70 × 688,037.80
  4. Step 4: Simplify right side
    828,005.80x = 854,548,933,528.86
  5. Step 5: Solve for x
    x = 854,548,933,528.86/828,005.80
  6. Step 6: Final answer
    x = 1,032,056.70

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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.