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Finding the Fourth Proportional to 891,662.40, 1,230,494 and 509,697.36

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Solution

The fourth proportional to 891,662.40, 1,230,494 and 509,697.36 is: 703,382.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,662.40 : 1,230,494 = 509,697.36 : x
  2. Step 2: Convert to fraction form
    891,662.40/1,230,494 = 509,697.36/x
  3. Step 3: Cross multiply
    891,662.40x = 1,230,494 × 509,697.36
  4. Step 4: Simplify right side
    891,662.40x = 627,179,543,295.84
  5. Step 5: Solve for x
    x = 627,179,543,295.84/891,662.40
  6. Step 6: Final answer
    x = 703,382.29

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1.5x scale

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.