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Finding the Fourth Proportional to 640,016.40, 960,024.60 and 571,587.60

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Solution

The fourth proportional to 640,016.40, 960,024.60 and 571,587.60 is: 857,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,016.40 : 960,024.60 = 571,587.60 : x
  2. Step 2: Convert to fraction form
    640,016.40/960,024.60 = 571,587.60/x
  3. Step 3: Cross multiply
    640,016.40x = 960,024.60 × 571,587.60
  4. Step 4: Simplify right side
    640,016.40x = 548,738,157,054.96
  5. Step 5: Solve for x
    x = 548,738,157,054.96/640,016.40
  6. Step 6: Final answer
    x = 857,381.40

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Similar ratio
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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.