Home / 781,662,436.98-1,172,531,362.11-257,019,923.31

Finding the Fourth Proportional to 781,662,436.98, 1,172,531,362.11 and 257,019,923.31

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Solution

The fourth proportional to 781,662,436.98, 1,172,531,362.11 and 257,019,923.31 is: 385,542,283.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,662,436.98 : 1,172,531,362.11 = 257,019,923.31 : x
  2. Step 2: Convert to fraction form
    781,662,436.98/1,172,531,362.11 = 257,019,923.31/x
  3. Step 3: Cross multiply
    781,662,436.98x = 1,172,531,362.11 × 257,019,923.31
  4. Step 4: Simplify right side
    781,662,436.98x = 301,363,920,768,081,984
  5. Step 5: Solve for x
    x = 301,363,920,768,081,984/781,662,436.98
  6. Step 6: Final answer
    x = 385,542,283.36

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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.