Home / 860,330.88-1,290,496.21-409,685.42

Finding the Fourth Proportional to 860,330.88, 1,290,496.21 and 409,685.42

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Solution

The fourth proportional to 860,330.88, 1,290,496.21 and 409,685.42 is: 614,528.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,330.88 : 1,290,496.21 = 409,685.42 : x
  2. Step 2: Convert to fraction form
    860,330.88/1,290,496.21 = 409,685.42/x
  3. Step 3: Cross multiply
    860,330.88x = 1,290,496.21 × 409,685.42
  4. Step 4: Simplify right side
    860,330.88x = 528,697,484,004.29
  5. Step 5: Solve for x
    x = 528,697,484,004.29/860,330.88
  6. Step 6: Final answer
    x = 614,528.08

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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.