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Finding the Fourth Proportional to 511,869.39, 767,803.95 and 274,886.07

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Solution

The fourth proportional to 511,869.39, 767,803.95 and 274,886.07 is: 412,329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,869.39 : 767,803.95 = 274,886.07 : x
  2. Step 2: Convert to fraction form
    511,869.39/767,803.95 = 274,886.07/x
  3. Step 3: Cross multiply
    511,869.39x = 767,803.95 × 274,886.07
  4. Step 4: Simplify right side
    511,869.39x = 211,058,610,345.98
  5. Step 5: Solve for x
    x = 211,058,610,345.98/511,869.39
  6. Step 6: Final answer
    x = 412,329.03

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1.5x scale

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.