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Finding the Fourth Proportional to 659,856.84, 989,802.43 and 210,577.11

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Solution

The fourth proportional to 659,856.84, 989,802.43 and 210,577.11 is: 315,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,856.84 : 989,802.43 = 210,577.11 : x
  2. Step 2: Convert to fraction form
    659,856.84/989,802.43 = 210,577.11/x
  3. Step 3: Cross multiply
    659,856.84x = 989,802.43 × 210,577.11
  4. Step 4: Simplify right side
    659,856.84x = 208,429,735,180.38
  5. Step 5: Solve for x
    x = 208,429,735,180.38/659,856.84
  6. Step 6: Final answer
    x = 315,871.14

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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.