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Finding the Fourth Proportional to 879,970, 1,214,373.18 and 477,562

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Solution

The fourth proportional to 879,970, 1,214,373.18 and 477,562 is: 659,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,970 : 1,214,373.18 = 477,562 : x
  2. Step 2: Convert to fraction form
    879,970/1,214,373.18 = 477,562/x
  3. Step 3: Cross multiply
    879,970x = 1,214,373.18 × 477,562
  4. Step 4: Simplify right side
    879,970x = 579,938,484,587.16
  5. Step 5: Solve for x
    x = 579,938,484,587.16/879,970
  6. Step 6: Final answer
    x = 659,043.47

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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.