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Finding the Fourth Proportional to 857,785.60, 1,285,803.60 and 502,616.80

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Solution

The fourth proportional to 857,785.60, 1,285,803.60 and 502,616.80 is: 753,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,785.60 : 1,285,803.60 = 502,616.80 : x
  2. Step 2: Convert to fraction form
    857,785.60/1,285,803.60 = 502,616.80/x
  3. Step 3: Cross multiply
    857,785.60x = 1,285,803.60 × 502,616.80
  4. Step 4: Simplify right side
    857,785.60x = 646,266,490,860.48
  5. Step 5: Solve for x
    x = 646,266,490,860.48/857,785.60
  6. Step 6: Final answer
    x = 753,412.61

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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.