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Finding the Fourth Proportional to 1,314,597.12, 1,972,712.16 and 841,621.92

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Solution

The fourth proportional to 1,314,597.12, 1,972,712.16 and 841,621.92 is: 1,262,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,597.12 : 1,972,712.16 = 841,621.92 : x
  2. Step 2: Convert to fraction form
    1,314,597.12/1,972,712.16 = 841,621.92/x
  3. Step 3: Cross multiply
    1,314,597.12x = 1,972,712.16 × 841,621.92
  4. Step 4: Simplify right side
    1,314,597.12x = 1,660,277,795,706.55
  5. Step 5: Solve for x
    x = 1,660,277,795,706.55/1,314,597.12
  6. Step 6: Final answer
    x = 1,262,955.60

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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.