Home / 990,714.70-1,485,087.90-457,305.40

Finding the Fourth Proportional to 990,714.70, 1,485,087.90 and 457,305.40

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Solution

The fourth proportional to 990,714.70, 1,485,087.90 and 457,305.40 is: 685,503.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,714.70 : 1,485,087.90 = 457,305.40 : x
  2. Step 2: Convert to fraction form
    990,714.70/1,485,087.90 = 457,305.40/x
  3. Step 3: Cross multiply
    990,714.70x = 1,485,087.90 × 457,305.40
  4. Step 4: Simplify right side
    990,714.70x = 679,138,716,144.66
  5. Step 5: Solve for x
    x = 679,138,716,144.66/990,714.70
  6. Step 6: Final answer
    x = 685,503.82

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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.