Home / 990,529.01-1,485,720.84-316,429.28

Finding the Fourth Proportional to 990,529.01, 1,485,720.84 and 316,429.28

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Solution

The fourth proportional to 990,529.01, 1,485,720.84 and 316,429.28 is: 474,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,529.01 : 1,485,720.84 = 316,429.28 : x
  2. Step 2: Convert to fraction form
    990,529.01/1,485,720.84 = 316,429.28/x
  3. Step 3: Cross multiply
    990,529.01x = 1,485,720.84 × 316,429.28
  4. Step 4: Simplify right side
    990,529.01x = 470,125,575,682.20
  5. Step 5: Solve for x
    x = 470,125,575,682.20/990,529.01
  6. Step 6: Final answer
    x = 474,620.70

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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.