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Finding the Fourth Proportional to 659,794.77, 989,674.85 and 210,543.06

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Solution

The fourth proportional to 659,794.77, 989,674.85 and 210,543.06 is: 315,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,794.77 : 989,674.85 = 210,543.06 : x
  2. Step 2: Convert to fraction form
    659,794.77/989,674.85 = 210,543.06/x
  3. Step 3: Cross multiply
    659,794.77x = 989,674.85 × 210,543.06
  4. Step 4: Simplify right side
    659,794.77x = 208,369,166,954.81
  5. Step 5: Solve for x
    x = 208,369,166,954.81/659,794.77
  6. Step 6: Final answer
    x = 315,809.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.