Home / 879,715.20-1,214,012.16-477,306.88

Finding the Fourth Proportional to 879,715.20, 1,214,012.16 and 477,306.88

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Solution

The fourth proportional to 879,715.20, 1,214,012.16 and 477,306.88 is: 658,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,715.20 : 1,214,012.16 = 477,306.88 : x
  2. Step 2: Convert to fraction form
    879,715.20/1,214,012.16 = 477,306.88/x
  3. Step 3: Cross multiply
    879,715.20x = 1,214,012.16 × 477,306.88
  4. Step 4: Simplify right side
    879,715.20x = 579,456,356,371.66
  5. Step 5: Solve for x
    x = 579,456,356,371.66/879,715.20
  6. Step 6: Final answer
    x = 658,686.31

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1.5x scale

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.