Home / 1,189,818.57-1,784,057.14-390,885.60

Finding the Fourth Proportional to 1,189,818.57, 1,784,057.14 and 390,885.60

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Solution

The fourth proportional to 1,189,818.57, 1,784,057.14 and 390,885.60 is: 586,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,818.57 : 1,784,057.14 = 390,885.60 : x
  2. Step 2: Convert to fraction form
    1,189,818.57/1,784,057.14 = 390,885.60/x
  3. Step 3: Cross multiply
    1,189,818.57x = 1,784,057.14 × 390,885.60
  4. Step 4: Simplify right side
    1,189,818.57x = 697,362,245,603.18
  5. Step 5: Solve for x
    x = 697,362,245,603.18/1,189,818.57
  6. Step 6: Final answer
    x = 586,108.05

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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.