Home / 919,913.40-1,269,478.56-517,505.40

Finding the Fourth Proportional to 919,913.40, 1,269,478.56 and 517,505.40

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Solution

The fourth proportional to 919,913.40, 1,269,478.56 and 517,505.40 is: 714,156.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,913.40 : 1,269,478.56 = 517,505.40 : x
  2. Step 2: Convert to fraction form
    919,913.40/1,269,478.56 = 517,505.40/x
  3. Step 3: Cross multiply
    919,913.40x = 1,269,478.56 × 517,505.40
  4. Step 4: Simplify right side
    919,913.40x = 656,962,009,984.22
  5. Step 5: Solve for x
    x = 656,962,009,984.22/919,913.40
  6. Step 6: Final answer
    x = 714,156.37

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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.