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Finding the Fourth Proportional to 690,418.77, 953,150.67 and 484,318.62

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Solution

The fourth proportional to 690,418.77, 953,150.67 and 484,318.62 is: 668,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,418.77 : 953,150.67 = 484,318.62 : x
  2. Step 2: Convert to fraction form
    690,418.77/953,150.67 = 484,318.62/x
  3. Step 3: Cross multiply
    690,418.77x = 953,150.67 × 484,318.62
  4. Step 4: Simplify right side
    690,418.77x = 461,628,617,146.48
  5. Step 5: Solve for x
    x = 461,628,617,146.48/690,418.77
  6. Step 6: Final answer
    x = 668,621.19

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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.