Home / 989,046.20-1,483,958.10-389,905.40

Finding the Fourth Proportional to 989,046.20, 1,483,958.10 and 389,905.40

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Solution

The fourth proportional to 989,046.20, 1,483,958.10 and 389,905.40 is: 585,011.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,046.20 : 1,483,958.10 = 389,905.40 : x
  2. Step 2: Convert to fraction form
    989,046.20/1,483,958.10 = 389,905.40/x
  3. Step 3: Cross multiply
    989,046.20x = 1,483,958.10 × 389,905.40
  4. Step 4: Simplify right side
    989,046.20x = 578,603,276,563.74
  5. Step 5: Solve for x
    x = 578,603,276,563.74/989,046.20
  6. Step 6: Final answer
    x = 585,011.37

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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.