Home / 912,999.40-1,369,499.10-439,570.60

Finding the Fourth Proportional to 912,999.40, 1,369,499.10 and 439,570.60

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Solution

The fourth proportional to 912,999.40, 1,369,499.10 and 439,570.60 is: 659,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,999.40 : 1,369,499.10 = 439,570.60 : x
  2. Step 2: Convert to fraction form
    912,999.40/1,369,499.10 = 439,570.60/x
  3. Step 3: Cross multiply
    912,999.40x = 1,369,499.10 × 439,570.60
  4. Step 4: Simplify right side
    912,999.40x = 601,991,541,086.46
  5. Step 5: Solve for x
    x = 601,991,541,086.46/912,999.40
  6. Step 6: Final answer
    x = 659,355.90

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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.