Home / 426,547.23-639,311.90-198,536.01

Finding the Fourth Proportional to 426,547.23, 639,311.90 and 198,536.01

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Solution

The fourth proportional to 426,547.23, 639,311.90 and 198,536.01 is: 297,567.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,547.23 : 639,311.90 = 198,536.01 : x
  2. Step 2: Convert to fraction form
    426,547.23/639,311.90 = 198,536.01/x
  3. Step 3: Cross multiply
    426,547.23x = 639,311.90 × 198,536.01
  4. Step 4: Simplify right side
    426,547.23x = 126,926,432,778.84
  5. Step 5: Solve for x
    x = 126,926,432,778.84/426,547.23
  6. Step 6: Final answer
    x = 297,567.12

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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.