Home / 717,977.19-990,808.53-395,687.30

Finding the Fourth Proportional to 717,977.19, 990,808.53 and 395,687.30

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Solution

The fourth proportional to 717,977.19, 990,808.53 and 395,687.30 is: 546,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,977.19 : 990,808.53 = 395,687.30 : x
  2. Step 2: Convert to fraction form
    717,977.19/990,808.53 = 395,687.30/x
  3. Step 3: Cross multiply
    717,977.19x = 990,808.53 × 395,687.30
  4. Step 4: Simplify right side
    717,977.19x = 392,050,347,840.54
  5. Step 5: Solve for x
    x = 392,050,347,840.54/717,977.19
  6. Step 6: Final answer
    x = 546,048.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.