Home / 698,165,790.90-1,047,248,686.35-309,576,131.70

Finding the Fourth Proportional to 698,165,790.90, 1,047,248,686.35 and 309,576,131.70

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Solution

The fourth proportional to 698,165,790.90, 1,047,248,686.35 and 309,576,131.70 is: 464,364,197.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,165,790.90 : 1,047,248,686.35 = 309,576,131.70 : x
  2. Step 2: Convert to fraction form
    698,165,790.90/1,047,248,686.35 = 309,576,131.70/x
  3. Step 3: Cross multiply
    698,165,790.90x = 1,047,248,686.35 × 309,576,131.70
  4. Step 4: Simplify right side
    698,165,790.90x = 324,203,197,248,139,584
  5. Step 5: Solve for x
    x = 324,203,197,248,139,584/698,165,790.90
  6. Step 6: Final answer
    x = 464,364,197.55

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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.