Home / 525,747.20-788,620.80-315,622.40

Finding the Fourth Proportional to 525,747.20, 788,620.80 and 315,622.40

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Solution

The fourth proportional to 525,747.20, 788,620.80 and 315,622.40 is: 473,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,747.20 : 788,620.80 = 315,622.40 : x
  2. Step 2: Convert to fraction form
    525,747.20/788,620.80 = 315,622.40/x
  3. Step 3: Cross multiply
    525,747.20x = 788,620.80 × 315,622.40
  4. Step 4: Simplify right side
    525,747.20x = 248,906,389,585.92
  5. Step 5: Solve for x
    x = 248,906,389,585.92/525,747.20
  6. Step 6: Final answer
    x = 473,433.60

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Double scale
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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.