Home / 990,458.09-1,485,446.83-457,466.21

Finding the Fourth Proportional to 990,458.09, 1,485,446.83 and 457,466.21

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Solution

The fourth proportional to 990,458.09, 1,485,446.83 and 457,466.21 is: 686,088.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,458.09 : 1,485,446.83 = 457,466.21 : x
  2. Step 2: Convert to fraction form
    990,458.09/1,485,446.83 = 457,466.21/x
  3. Step 3: Cross multiply
    990,458.09x = 1,485,446.83 × 457,466.21
  4. Step 4: Simplify right side
    990,458.09x = 679,541,722,905.72
  5. Step 5: Solve for x
    x = 679,541,722,905.72/990,458.09
  6. Step 6: Final answer
    x = 686,088.32

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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.