Home / 920,403,939.12-1,380,799,806.48-298,570,616.70

Finding the Fourth Proportional to 920,403,939.12, 1,380,799,806.48 and 298,570,616.70

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Solution

The fourth proportional to 920,403,939.12, 1,380,799,806.48 and 298,570,616.70 is: 447,918,823.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,403,939.12 : 1,380,799,806.48 = 298,570,616.70 : x
  2. Step 2: Convert to fraction form
    920,403,939.12/1,380,799,806.48 = 298,570,616.70/x
  3. Step 3: Cross multiply
    920,403,939.12x = 1,380,799,806.48 × 298,570,616.70
  4. Step 4: Simplify right side
    920,403,939.12x = 412,266,249,759,974,272
  5. Step 5: Solve for x
    x = 412,266,249,759,974,272/920,403,939.12
  6. Step 6: Final answer
    x = 447,918,823.72

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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.