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Finding the Fourth Proportional to 558,320.40, 837,480.60 and 407,854.80

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Solution

The fourth proportional to 558,320.40, 837,480.60 and 407,854.80 is: 611,782.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,320.40 : 837,480.60 = 407,854.80 : x
  2. Step 2: Convert to fraction form
    558,320.40/837,480.60 = 407,854.80/x
  3. Step 3: Cross multiply
    558,320.40x = 837,480.60 × 407,854.80
  4. Step 4: Simplify right side
    558,320.40x = 341,570,482,616.88
  5. Step 5: Solve for x
    x = 341,570,482,616.88/558,320.40
  6. Step 6: Final answer
    x = 611,782.20

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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.