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Finding the Fourth Proportional to 909,892.80, 1,364,709.60 and 310,881.60

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Solution

The fourth proportional to 909,892.80, 1,364,709.60 and 310,881.60 is: 466,278.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,892.80 : 1,364,709.60 = 310,881.60 : x
  2. Step 2: Convert to fraction form
    909,892.80/1,364,709.60 = 310,881.60/x
  3. Step 3: Cross multiply
    909,892.80x = 1,364,709.60 × 310,881.60
  4. Step 4: Simplify right side
    909,892.80x = 424,263,103,983.36
  5. Step 5: Solve for x
    x = 424,263,103,983.36/909,892.80
  6. Step 6: Final answer
    x = 466,278.12

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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.