Home / 806,660,328.80-1,209,272,640.96-315,261,849.44

Finding the Fourth Proportional to 806,660,328.80, 1,209,272,640.96 and 315,261,849.44

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Solution

The fourth proportional to 806,660,328.80, 1,209,272,640.96 and 315,261,849.44 is: 472,612,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,660,328.80 : 1,209,272,640.96 = 315,261,849.44 : x
  2. Step 2: Convert to fraction form
    806,660,328.80/1,209,272,640.96 = 315,261,849.44/x
  3. Step 3: Cross multiply
    806,660,328.80x = 1,209,272,640.96 × 315,261,849.44
  4. Step 4: Simplify right side
    806,660,328.80x = 381,237,529,266,242,688
  5. Step 5: Solve for x
    x = 381,237,529,266,242,688/806,660,328.80
  6. Step 6: Final answer
    x = 472,612,220.60

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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.