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Finding the Fourth Proportional to 640,243.60, 960,082.50 and 340,653.16

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Solution

The fourth proportional to 640,243.60, 960,082.50 and 340,653.16 is: 510,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,243.60 : 960,082.50 = 340,653.16 : x
  2. Step 2: Convert to fraction form
    640,243.60/960,082.50 = 340,653.16/x
  3. Step 3: Cross multiply
    640,243.60x = 960,082.50 × 340,653.16
  4. Step 4: Simplify right side
    640,243.60x = 327,055,137,485.70
  5. Step 5: Solve for x
    x = 327,055,137,485.70/640,243.60
  6. Step 6: Final answer
    x = 510,829.22

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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.