Home / 990,346.21-1,485,732.44-307,219.46

Finding the Fourth Proportional to 990,346.21, 1,485,732.44 and 307,219.46

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Solution

The fourth proportional to 990,346.21, 1,485,732.44 and 307,219.46 is: 460,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,346.21 : 1,485,732.44 = 307,219.46 : x
  2. Step 2: Convert to fraction form
    990,346.21/1,485,732.44 = 307,219.46/x
  3. Step 3: Cross multiply
    990,346.21x = 1,485,732.44 × 307,219.46
  4. Step 4: Simplify right side
    990,346.21x = 456,445,911,260.67
  5. Step 5: Solve for x
    x = 456,445,911,260.67/990,346.21
  6. Step 6: Final answer
    x = 460,895.30

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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.