Home / 912,991.40-1,369,487.10-439,562.60

Finding the Fourth Proportional to 912,991.40, 1,369,487.10 and 439,562.60

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Solution

The fourth proportional to 912,991.40, 1,369,487.10 and 439,562.60 is: 659,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,991.40 : 1,369,487.10 = 439,562.60 : x
  2. Step 2: Convert to fraction form
    912,991.40/1,369,487.10 = 439,562.60/x
  3. Step 3: Cross multiply
    912,991.40x = 1,369,487.10 × 439,562.60
  4. Step 4: Simplify right side
    912,991.40x = 601,975,310,342.46
  5. Step 5: Solve for x
    x = 601,975,310,342.46/912,991.40
  6. Step 6: Final answer
    x = 659,343.90

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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.