Home / 990,719.70-1,485,095.40-457,310.40

Finding the Fourth Proportional to 990,719.70, 1,485,095.40 and 457,310.40

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Solution

The fourth proportional to 990,719.70, 1,485,095.40 and 457,310.40 is: 685,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,719.70 : 1,485,095.40 = 457,310.40 : x
  2. Step 2: Convert to fraction form
    990,719.70/1,485,095.40 = 457,310.40/x
  3. Step 3: Cross multiply
    990,719.70x = 1,485,095.40 × 457,310.40
  4. Step 4: Simplify right side
    990,719.70x = 679,149,571,412.16
  5. Step 5: Solve for x
    x = 679,149,571,412.16/990,719.70
  6. Step 6: Final answer
    x = 685,511.32

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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.