Home / 668,780.10-1,003,451.49-416,271.78

Finding the Fourth Proportional to 668,780.10, 1,003,451.49 and 416,271.78

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Solution

The fourth proportional to 668,780.10, 1,003,451.49 and 416,271.78 is: 624,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,780.10 : 1,003,451.49 = 416,271.78 : x
  2. Step 2: Convert to fraction form
    668,780.10/1,003,451.49 = 416,271.78/x
  3. Step 3: Cross multiply
    668,780.10x = 1,003,451.49 × 416,271.78
  4. Step 4: Simplify right side
    668,780.10x = 417,708,537,885.95
  5. Step 5: Solve for x
    x = 417,708,537,885.95/668,780.10
  6. Step 6: Final answer
    x = 624,582.79

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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.