Home / 919,899.40-1,269,459.06-517,491.40

Finding the Fourth Proportional to 919,899.40, 1,269,459.06 and 517,491.40

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Solution

The fourth proportional to 919,899.40, 1,269,459.06 and 517,491.40 is: 714,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,899.40 : 1,269,459.06 = 517,491.40 : x
  2. Step 2: Convert to fraction form
    919,899.40/1,269,459.06 = 517,491.40/x
  3. Step 3: Cross multiply
    919,899.40x = 1,269,459.06 × 517,491.40
  4. Step 4: Simplify right side
    919,899.40x = 656,934,146,202.08
  5. Step 5: Solve for x
    x = 656,934,146,202.08/919,899.40
  6. Step 6: Final answer
    x = 714,136.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.