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Finding the Fourth Proportional to 525,893.80, 788,840.70 and 326,828.20

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Solution

The fourth proportional to 525,893.80, 788,840.70 and 326,828.20 is: 490,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,893.80 : 788,840.70 = 326,828.20 : x
  2. Step 2: Convert to fraction form
    525,893.80/788,840.70 = 326,828.20/x
  3. Step 3: Cross multiply
    525,893.80x = 788,840.70 × 326,828.20
  4. Step 4: Simplify right side
    525,893.80x = 257,815,386,067.74
  5. Step 5: Solve for x
    x = 257,815,386,067.74/525,893.80
  6. Step 6: Final answer
    x = 490,242.30

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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.