Home / 947,018.45-1,306,885.41-511,435.76

Finding the Fourth Proportional to 947,018.45, 1,306,885.41 and 511,435.76

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Solution

The fourth proportional to 947,018.45, 1,306,885.41 and 511,435.76 is: 705,781.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,018.45 : 1,306,885.41 = 511,435.76 : x
  2. Step 2: Convert to fraction form
    947,018.45/1,306,885.41 = 511,435.76/x
  3. Step 3: Cross multiply
    947,018.45x = 1,306,885.41 × 511,435.76
  4. Step 4: Simplify right side
    947,018.45x = 668,387,923,804.66
  5. Step 5: Solve for x
    x = 668,387,923,804.66/947,018.45
  6. Step 6: Final answer
    x = 705,781.32

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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.