Home / 487,430.07-729,162.23-412,080.63

Finding the Fourth Proportional to 487,430.07, 729,162.23 and 412,080.63

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Solution

The fourth proportional to 487,430.07, 729,162.23 and 412,080.63 is: 616,444.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,430.07 : 729,162.23 = 412,080.63 : x
  2. Step 2: Convert to fraction form
    487,430.07/729,162.23 = 412,080.63/x
  3. Step 3: Cross multiply
    487,430.07x = 729,162.23 × 412,080.63
  4. Step 4: Simplify right side
    487,430.07x = 300,473,629,050.20
  5. Step 5: Solve for x
    x = 300,473,629,050.20/487,430.07
  6. Step 6: Final answer
    x = 616,444.59

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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.