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Finding the Fourth Proportional to 673,654.80, 1,010,482.20 and 407,278.20

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Solution

The fourth proportional to 673,654.80, 1,010,482.20 and 407,278.20 is: 610,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,654.80 : 1,010,482.20 = 407,278.20 : x
  2. Step 2: Convert to fraction form
    673,654.80/1,010,482.20 = 407,278.20/x
  3. Step 3: Cross multiply
    673,654.80x = 1,010,482.20 × 407,278.20
  4. Step 4: Simplify right side
    673,654.80x = 411,547,371,548.04
  5. Step 5: Solve for x
    x = 411,547,371,548.04/673,654.80
  6. Step 6: Final answer
    x = 610,917.30

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