Home / 985,643.10-1,478,355.30-275,742.90

Finding the Fourth Proportional to 985,643.10, 1,478,355.30 and 275,742.90

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Solution

The fourth proportional to 985,643.10, 1,478,355.30 and 275,742.90 is: 413,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,643.10 : 1,478,355.30 = 275,742.90 : x
  2. Step 2: Convert to fraction form
    985,643.10/1,478,355.30 = 275,742.90/x
  3. Step 3: Cross multiply
    985,643.10x = 1,478,355.30 × 275,742.90
  4. Step 4: Simplify right side
    985,643.10x = 407,645,977,652.37
  5. Step 5: Solve for x
    x = 407,645,977,652.37/985,643.10
  6. Step 6: Final answer
    x = 413,583.76

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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.