Home / 705,026.80-1,057,540.20-406,428.40

Finding the Fourth Proportional to 705,026.80, 1,057,540.20 and 406,428.40

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Solution

The fourth proportional to 705,026.80, 1,057,540.20 and 406,428.40 is: 609,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,026.80 : 1,057,540.20 = 406,428.40 : x
  2. Step 2: Convert to fraction form
    705,026.80/1,057,540.20 = 406,428.40/x
  3. Step 3: Cross multiply
    705,026.80x = 1,057,540.20 × 406,428.40
  4. Step 4: Simplify right side
    705,026.80x = 429,814,371,421.68
  5. Step 5: Solve for x
    x = 429,814,371,421.68/705,026.80
  6. Step 6: Final answer
    x = 609,642.60

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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.