Home / 990,423.60-1,485,635.40-923,501.40

Finding the Fourth Proportional to 990,423.60, 1,485,635.40 and 923,501.40

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Solution

The fourth proportional to 990,423.60, 1,485,635.40 and 923,501.40 is: 1,385,252.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,423.60 : 1,485,635.40 = 923,501.40 : x
  2. Step 2: Convert to fraction form
    990,423.60/1,485,635.40 = 923,501.40/x
  3. Step 3: Cross multiply
    990,423.60x = 1,485,635.40 × 923,501.40
  4. Step 4: Simplify right side
    990,423.60x = 1,371,986,371,789.56
  5. Step 5: Solve for x
    x = 1,371,986,371,789.56/990,423.60
  6. Step 6: Final answer
    x = 1,385,252.10

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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.