Home / 1,291,972.11-1,937,219.72-393,148.05

Finding the Fourth Proportional to 1,291,972.11, 1,937,219.72 and 393,148.05

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Solution

The fourth proportional to 1,291,972.11, 1,937,219.72 and 393,148.05 is: 589,497.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,972.11 : 1,937,219.72 = 393,148.05 : x
  2. Step 2: Convert to fraction form
    1,291,972.11/1,937,219.72 = 393,148.05/x
  3. Step 3: Cross multiply
    1,291,972.11x = 1,937,219.72 × 393,148.05
  4. Step 4: Simplify right side
    1,291,972.11x = 761,614,153,373.81
  5. Step 5: Solve for x
    x = 761,614,153,373.81/1,291,972.11
  6. Step 6: Final answer
    x = 589,497.36

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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.