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Finding the Fourth Proportional to 879,912, 1,214,278.56 and 477,504

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Solution

The fourth proportional to 879,912, 1,214,278.56 and 477,504 is: 658,955.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,912 : 1,214,278.56 = 477,504 : x
  2. Step 2: Convert to fraction form
    879,912/1,214,278.56 = 477,504/x
  3. Step 3: Cross multiply
    879,912x = 1,214,278.56 × 477,504
  4. Step 4: Simplify right side
    879,912x = 579,822,869,514.24
  5. Step 5: Solve for x
    x = 579,822,869,514.24/879,912
  6. Step 6: Final answer
    x = 658,955.52

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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.