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Finding the Fourth Proportional to 640,245.60, 960,085.50 and 340,655.16

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Solution

The fourth proportional to 640,245.60, 960,085.50 and 340,655.16 is: 510,832.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,245.60 : 960,085.50 = 340,655.16 : x
  2. Step 2: Convert to fraction form
    640,245.60/960,085.50 = 340,655.16/x
  3. Step 3: Cross multiply
    640,245.60x = 960,085.50 × 340,655.16
  4. Step 4: Simplify right side
    640,245.60x = 327,058,079,616.18
  5. Step 5: Solve for x
    x = 327,058,079,616.18/640,245.60
  6. Step 6: Final answer
    x = 510,832.22

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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.