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Finding the Fourth Proportional to 525,869.20, 788,803.80 and 494,765.20

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Solution

The fourth proportional to 525,869.20, 788,803.80 and 494,765.20 is: 742,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,869.20 : 788,803.80 = 494,765.20 : x
  2. Step 2: Convert to fraction form
    525,869.20/788,803.80 = 494,765.20/x
  3. Step 3: Cross multiply
    525,869.20x = 788,803.80 × 494,765.20
  4. Step 4: Simplify right side
    525,869.20x = 390,272,669,867.76
  5. Step 5: Solve for x
    x = 390,272,669,867.76/525,869.20
  6. Step 6: Final answer
    x = 742,147.80

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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.