Home / 679,954,009.20-1,019,931,013.80-219,938,679.60

Finding the Fourth Proportional to 679,954,009.20, 1,019,931,013.80 and 219,938,679.60

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Solution

The fourth proportional to 679,954,009.20, 1,019,931,013.80 and 219,938,679.60 is: 329,908,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,954,009.20 : 1,019,931,013.80 = 219,938,679.60 : x
  2. Step 2: Convert to fraction form
    679,954,009.20/1,019,931,013.80 = 219,938,679.60/x
  3. Step 3: Cross multiply
    679,954,009.20x = 1,019,931,013.80 × 219,938,679.60
  4. Step 4: Simplify right side
    679,954,009.20x = 224,322,280,458,261,376
  5. Step 5: Solve for x
    x = 224,322,280,458,261,376/679,954,009.20
  6. Step 6: Final answer
    x = 329,908,019.40

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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.