Home / 858,875.40-1,285,688.70-669,918.60

Finding the Fourth Proportional to 858,875.40, 1,285,688.70 and 669,918.60

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Solution

The fourth proportional to 858,875.40, 1,285,688.70 and 669,918.60 is: 1,002,830.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,875.40 : 1,285,688.70 = 669,918.60 : x
  2. Step 2: Convert to fraction form
    858,875.40/1,285,688.70 = 669,918.60/x
  3. Step 3: Cross multiply
    858,875.40x = 1,285,688.70 × 669,918.60
  4. Step 4: Simplify right side
    858,875.40x = 861,306,773,939.82
  5. Step 5: Solve for x
    x = 861,306,773,939.82/858,875.40
  6. Step 6: Final answer
    x = 1,002,830.88

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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.