Home / 679,620.78-1,019,457.09-346,807.98

Finding the Fourth Proportional to 679,620.78, 1,019,457.09 and 346,807.98

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Solution

The fourth proportional to 679,620.78, 1,019,457.09 and 346,807.98 is: 520,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,620.78 : 1,019,457.09 = 346,807.98 : x
  2. Step 2: Convert to fraction form
    679,620.78/1,019,457.09 = 346,807.98/x
  3. Step 3: Cross multiply
    679,620.78x = 1,019,457.09 × 346,807.98
  4. Step 4: Simplify right side
    679,620.78x = 353,555,854,079.58
  5. Step 5: Solve for x
    x = 353,555,854,079.58/679,620.78
  6. Step 6: Final answer
    x = 520,225.20

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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.