Home / 679,972.90-1,019,959.35-409,368.10

Finding the Fourth Proportional to 679,972.90, 1,019,959.35 and 409,368.10

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Solution

The fourth proportional to 679,972.90, 1,019,959.35 and 409,368.10 is: 614,052.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,972.90 : 1,019,959.35 = 409,368.10 : x
  2. Step 2: Convert to fraction form
    679,972.90/1,019,959.35 = 409,368.10/x
  3. Step 3: Cross multiply
    679,972.90x = 1,019,959.35 × 409,368.10
  4. Step 4: Simplify right side
    679,972.90x = 417,538,821,186.74
  5. Step 5: Solve for x
    x = 417,538,821,186.74/679,972.90
  6. Step 6: Final answer
    x = 614,052.15

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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.