Home / 1,090,392.40-1,635,588.60-669,905.20

Finding the Fourth Proportional to 1,090,392.40, 1,635,588.60 and 669,905.20

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Solution

The fourth proportional to 1,090,392.40, 1,635,588.60 and 669,905.20 is: 1,004,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,392.40 : 1,635,588.60 = 669,905.20 : x
  2. Step 2: Convert to fraction form
    1,090,392.40/1,635,588.60 = 669,905.20/x
  3. Step 3: Cross multiply
    1,090,392.40x = 1,635,588.60 × 669,905.20
  4. Step 4: Simplify right side
    1,090,392.40x = 1,095,689,308,200.72
  5. Step 5: Solve for x
    x = 1,095,689,308,200.72/1,090,392.40
  6. Step 6: Final answer
    x = 1,004,857.80

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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.