Home / 990,595.60-1,485,893.40-280,614.40

Finding the Fourth Proportional to 990,595.60, 1,485,893.40 and 280,614.40

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Solution

The fourth proportional to 990,595.60, 1,485,893.40 and 280,614.40 is: 420,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,595.60 : 1,485,893.40 = 280,614.40 : x
  2. Step 2: Convert to fraction form
    990,595.60/1,485,893.40 = 280,614.40/x
  3. Step 3: Cross multiply
    990,595.60x = 1,485,893.40 × 280,614.40
  4. Step 4: Simplify right side
    990,595.60x = 416,963,084,904.96
  5. Step 5: Solve for x
    x = 416,963,084,904.96/990,595.60
  6. Step 6: Final answer
    x = 420,921.60

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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.