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Finding the Fourth Proportional to 558,506.40, 837,759.60 and 409,790.40

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Solution

The fourth proportional to 558,506.40, 837,759.60 and 409,790.40 is: 614,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,506.40 : 837,759.60 = 409,790.40 : x
  2. Step 2: Convert to fraction form
    558,506.40/837,759.60 = 409,790.40/x
  3. Step 3: Cross multiply
    558,506.40x = 837,759.60 × 409,790.40
  4. Step 4: Simplify right side
    558,506.40x = 343,305,841,587.84
  5. Step 5: Solve for x
    x = 343,305,841,587.84/558,506.40
  6. Step 6: Final answer
    x = 614,685.60

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Similar ratio
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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.