Home / 714,736.80-986,368.95-428,250.73

Finding the Fourth Proportional to 714,736.80, 986,368.95 and 428,250.73

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Solution

The fourth proportional to 714,736.80, 986,368.95 and 428,250.73 is: 591,005.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,736.80 : 986,368.95 = 428,250.73 : x
  2. Step 2: Convert to fraction form
    714,736.80/986,368.95 = 428,250.73/x
  3. Step 3: Cross multiply
    714,736.80x = 986,368.95 × 428,250.73
  4. Step 4: Simplify right side
    714,736.80x = 422,413,222,886.83
  5. Step 5: Solve for x
    x = 422,413,222,886.83/714,736.80
  6. Step 6: Final answer
    x = 591,005.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.