Home / 678,404.20-1,017,606.30-426,461.80

Finding the Fourth Proportional to 678,404.20, 1,017,606.30 and 426,461.80

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Solution

The fourth proportional to 678,404.20, 1,017,606.30 and 426,461.80 is: 639,692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,404.20 : 1,017,606.30 = 426,461.80 : x
  2. Step 2: Convert to fraction form
    678,404.20/1,017,606.30 = 426,461.80/x
  3. Step 3: Cross multiply
    678,404.20x = 1,017,606.30 × 426,461.80
  4. Step 4: Simplify right side
    678,404.20x = 433,970,214,389.34
  5. Step 5: Solve for x
    x = 433,970,214,389.34/678,404.20
  6. Step 6: Final answer
    x = 639,692.70

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1.5x scale

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.