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Finding the Fourth Proportional to 628,504,205.20, 942,756,307.80 and 628,504,205.20

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Solution

The fourth proportional to 628,504,205.20, 942,756,307.80 and 628,504,205.20 is: 942,756,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,504,205.20 : 942,756,307.80 = 628,504,205.20 : x
  2. Step 2: Convert to fraction form
    628,504,205.20/942,756,307.80 = 628,504,205.20/x
  3. Step 3: Cross multiply
    628,504,205.20x = 942,756,307.80 × 628,504,205.20
  4. Step 4: Simplify right side
    628,504,205.20x = 592,526,303,931,125,632
  5. Step 5: Solve for x
    x = 592,526,303,931,125,632/628,504,205.20
  6. Step 6: Final answer
    x = 942,756,307.80

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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.