Home / 1,120,643,702.72-1,679,628,189.60-521,575,423.04

Finding the Fourth Proportional to 1,120,643,702.72, 1,679,628,189.60 and 521,575,423.04

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Solution

The fourth proportional to 1,120,643,702.72, 1,679,628,189.60 and 521,575,423.04 is: 781,740,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,643,702.72 : 1,679,628,189.60 = 521,575,423.04 : x
  2. Step 2: Convert to fraction form
    1,120,643,702.72/1,679,628,189.60 = 521,575,423.04/x
  3. Step 3: Cross multiply
    1,120,643,702.72x = 1,679,628,189.60 × 521,575,423.04
  4. Step 4: Simplify right side
    1,120,643,702.72x = 876,052,783,540,529,280
  5. Step 5: Solve for x
    x = 876,052,783,540,529,280/1,120,643,702.72
  6. Step 6: Final answer
    x = 781,740,691.90

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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.