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Finding the Fourth Proportional to 898,520.80, 1,347,586.80 and 393,080.80

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Solution

The fourth proportional to 898,520.80, 1,347,586.80 and 393,080.80 is: 589,536.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,520.80 : 1,347,586.80 = 393,080.80 : x
  2. Step 2: Convert to fraction form
    898,520.80/1,347,586.80 = 393,080.80/x
  3. Step 3: Cross multiply
    898,520.80x = 1,347,586.80 × 393,080.80
  4. Step 4: Simplify right side
    898,520.80x = 529,710,497,413.44
  5. Step 5: Solve for x
    x = 529,710,497,413.44/898,520.80
  6. Step 6: Final answer
    x = 589,536.15

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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.