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Finding the Fourth Proportional to 584,729.40, 877,439.70 and 426,559.80

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Solution

The fourth proportional to 584,729.40, 877,439.70 and 426,559.80 is: 640,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,729.40 : 877,439.70 = 426,559.80 : x
  2. Step 2: Convert to fraction form
    584,729.40/877,439.70 = 426,559.80/x
  3. Step 3: Cross multiply
    584,729.40x = 877,439.70 × 426,559.80
  4. Step 4: Simplify right side
    584,729.40x = 374,280,502,944.06
  5. Step 5: Solve for x
    x = 374,280,502,944.06/584,729.40
  6. Step 6: Final answer
    x = 640,091.82

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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.