Home / 678,656.80-1,017,985.20-235,424.80

Finding the Fourth Proportional to 678,656.80, 1,017,985.20 and 235,424.80

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Solution

The fourth proportional to 678,656.80, 1,017,985.20 and 235,424.80 is: 353,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,656.80 : 1,017,985.20 = 235,424.80 : x
  2. Step 2: Convert to fraction form
    678,656.80/1,017,985.20 = 235,424.80/x
  3. Step 3: Cross multiply
    678,656.80x = 1,017,985.20 × 235,424.80
  4. Step 4: Simplify right side
    678,656.80x = 239,658,962,112.96
  5. Step 5: Solve for x
    x = 239,658,962,112.96/678,656.80
  6. Step 6: Final answer
    x = 353,137.20

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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.