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Finding the Fourth Proportional to 866,881.09, 1,300,330.55 and 387,133.30

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Solution

The fourth proportional to 866,881.09, 1,300,330.55 and 387,133.30 is: 580,703.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,881.09 : 1,300,330.55 = 387,133.30 : x
  2. Step 2: Convert to fraction form
    866,881.09/1,300,330.55 = 387,133.30/x
  3. Step 3: Cross multiply
    866,881.09x = 1,300,330.55 × 387,133.30
  4. Step 4: Simplify right side
    866,881.09x = 503,401,256,912.32
  5. Step 5: Solve for x
    x = 503,401,256,912.32/866,881.09
  6. Step 6: Final answer
    x = 580,703.93

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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.