Home / 691,740.81-954,815.04-405,353.16

Finding the Fourth Proportional to 691,740.81, 954,815.04 and 405,353.16

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Solution

The fourth proportional to 691,740.81, 954,815.04 and 405,353.16 is: 559,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,740.81 : 954,815.04 = 405,353.16 : x
  2. Step 2: Convert to fraction form
    691,740.81/954,815.04 = 405,353.16/x
  3. Step 3: Cross multiply
    691,740.81x = 954,815.04 × 405,353.16
  4. Step 4: Simplify right side
    691,740.81x = 387,037,293,679.53
  5. Step 5: Solve for x
    x = 387,037,293,679.53/691,740.81
  6. Step 6: Final answer
    x = 559,512.01

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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.