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Finding the Fourth Proportional to 1,279,962.06, 1,766,313.81 and 706,989.93

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Solution

The fourth proportional to 1,279,962.06, 1,766,313.81 and 706,989.93 is: 975,627.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,962.06 : 1,766,313.81 = 706,989.93 : x
  2. Step 2: Convert to fraction form
    1,279,962.06/1,766,313.81 = 706,989.93/x
  3. Step 3: Cross multiply
    1,279,962.06x = 1,766,313.81 × 706,989.93
  4. Step 4: Simplify right side
    1,279,962.06x = 1,248,766,076,889.93
  5. Step 5: Solve for x
    x = 1,248,766,076,889.93/1,279,962.06
  6. Step 6: Final answer
    x = 975,627.42

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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.