Home / 665,736.60-997,948.80-328,501.20

Finding the Fourth Proportional to 665,736.60, 997,948.80 and 328,501.20

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Solution

The fourth proportional to 665,736.60, 997,948.80 and 328,501.20 is: 492,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,736.60 : 997,948.80 = 328,501.20 : x
  2. Step 2: Convert to fraction form
    665,736.60/997,948.80 = 328,501.20/x
  3. Step 3: Cross multiply
    665,736.60x = 997,948.80 × 328,501.20
  4. Step 4: Simplify right side
    665,736.60x = 327,827,378,338.56
  5. Step 5: Solve for x
    x = 327,827,378,338.56/665,736.60
  6. Step 6: Final answer
    x = 492,428.05

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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.