Home / 690,275.36-952,579.32-388,475.84

Finding the Fourth Proportional to 690,275.36, 952,579.32 and 388,475.84

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Solution

The fourth proportional to 690,275.36, 952,579.32 and 388,475.84 is: 536,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,275.36 : 952,579.32 = 388,475.84 : x
  2. Step 2: Convert to fraction form
    690,275.36/952,579.32 = 388,475.84/x
  3. Step 3: Cross multiply
    690,275.36x = 952,579.32 × 388,475.84
  4. Step 4: Simplify right side
    690,275.36x = 370,054,051,503.63
  5. Step 5: Solve for x
    x = 370,054,051,503.63/690,275.36
  6. Step 6: Final answer
    x = 536,096.28

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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.