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Finding the Fourth Proportional to 525,820.20, 788,730.30 and 494,716.20

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Solution

The fourth proportional to 525,820.20, 788,730.30 and 494,716.20 is: 742,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,820.20 : 788,730.30 = 494,716.20 : x
  2. Step 2: Convert to fraction form
    525,820.20/788,730.30 = 494,716.20/x
  3. Step 3: Cross multiply
    525,820.20x = 788,730.30 × 494,716.20
  4. Step 4: Simplify right side
    525,820.20x = 390,197,656,840.86
  5. Step 5: Solve for x
    x = 390,197,656,840.86/525,820.20
  6. Step 6: Final answer
    x = 742,074.30

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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.