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Finding the Fourth Proportional to 608,920.40, 913,380.60 and 409,854.80

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Solution

The fourth proportional to 608,920.40, 913,380.60 and 409,854.80 is: 614,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,920.40 : 913,380.60 = 409,854.80 : x
  2. Step 2: Convert to fraction form
    608,920.40/913,380.60 = 409,854.80/x
  3. Step 3: Cross multiply
    608,920.40x = 913,380.60 × 409,854.80
  4. Step 4: Simplify right side
    608,920.40x = 374,353,423,136.88
  5. Step 5: Solve for x
    x = 374,353,423,136.88/608,920.40
  6. Step 6: Final answer
    x = 614,782.20

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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.