Home / 1,209,609,657.40-1,813,139,027.70-472,394,702.20

Finding the Fourth Proportional to 1,209,609,657.40, 1,813,139,027.70 and 472,394,702.20

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Solution

The fourth proportional to 1,209,609,657.40, 1,813,139,027.70 and 472,394,702.20 is: 708,093,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,609,657.40 : 1,813,139,027.70 = 472,394,702.20 : x
  2. Step 2: Convert to fraction form
    1,209,609,657.40/1,813,139,027.70 = 472,394,702.20/x
  3. Step 3: Cross multiply
    1,209,609,657.40x = 1,813,139,027.70 × 472,394,702.20
  4. Step 4: Simplify right side
    1,209,609,657.40x = 856,517,271,037,539,072
  5. Step 5: Solve for x
    x = 856,517,271,037,539,072/1,209,609,657.40
  6. Step 6: Final answer
    x = 708,093,942.37

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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.