Home / 990,569.40-1,485,854.10-242,615.40

Finding the Fourth Proportional to 990,569.40, 1,485,854.10 and 242,615.40

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Solution

The fourth proportional to 990,569.40, 1,485,854.10 and 242,615.40 is: 363,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,569.40 : 1,485,854.10 = 242,615.40 : x
  2. Step 2: Convert to fraction form
    990,569.40/1,485,854.10 = 242,615.40/x
  3. Step 3: Cross multiply
    990,569.40x = 1,485,854.10 × 242,615.40
  4. Step 4: Simplify right side
    990,569.40x = 360,491,086,813.14
  5. Step 5: Solve for x
    x = 360,491,086,813.14/990,569.40
  6. Step 6: Final answer
    x = 363,923.10

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Double scale
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Similar ratio
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1.5x scale

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.