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Finding the Fourth Proportional to 525,845.70, 788,768.55 and 384,840.90

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Solution

The fourth proportional to 525,845.70, 788,768.55 and 384,840.90 is: 577,261.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,845.70 : 788,768.55 = 384,840.90 : x
  2. Step 2: Convert to fraction form
    525,845.70/788,768.55 = 384,840.90/x
  3. Step 3: Cross multiply
    525,845.70x = 788,768.55 × 384,840.90
  4. Step 4: Simplify right side
    525,845.70x = 303,550,398,673.70
  5. Step 5: Solve for x
    x = 303,550,398,673.70/525,845.70
  6. Step 6: Final answer
    x = 577,261.35

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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.