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Finding the Fourth Proportional to 1,054,282.80, 1,454,316.06 and 666,978

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Solution

The fourth proportional to 1,054,282.80, 1,454,316.06 and 666,978 is: 920,053.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054,282.80 : 1,454,316.06 = 666,978 : x
  2. Step 2: Convert to fraction form
    1,054,282.80/1,454,316.06 = 666,978/x
  3. Step 3: Cross multiply
    1,054,282.80x = 1,454,316.06 × 666,978
  4. Step 4: Simplify right side
    1,054,282.80x = 969,996,817,066.68
  5. Step 5: Solve for x
    x = 969,996,817,066.68/1,054,282.80
  6. Step 6: Final answer
    x = 920,053.72

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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.