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Finding the Fourth Proportional to 525,854.20, 788,781.30 and 494,750.20

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Solution

The fourth proportional to 525,854.20, 788,781.30 and 494,750.20 is: 742,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,854.20 : 788,781.30 = 494,750.20 : x
  2. Step 2: Convert to fraction form
    525,854.20/788,781.30 = 494,750.20/x
  3. Step 3: Cross multiply
    525,854.20x = 788,781.30 × 494,750.20
  4. Step 4: Simplify right side
    525,854.20x = 390,249,705,931.26
  5. Step 5: Solve for x
    x = 390,249,705,931.26/525,854.20
  6. Step 6: Final answer
    x = 742,125.30

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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.