Home / 777,347.66-1,072,168.75-515,228.91

Finding the Fourth Proportional to 777,347.66, 1,072,168.75 and 515,228.91

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Solution

The fourth proportional to 777,347.66, 1,072,168.75 and 515,228.91 is: 710,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,347.66 : 1,072,168.75 = 515,228.91 : x
  2. Step 2: Convert to fraction form
    777,347.66/1,072,168.75 = 515,228.91/x
  3. Step 3: Cross multiply
    777,347.66x = 1,072,168.75 × 515,228.91
  4. Step 4: Simplify right side
    777,347.66x = 552,412,336,398.56
  5. Step 5: Solve for x
    x = 552,412,336,398.56/777,347.66
  6. Step 6: Final answer
    x = 710,637.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.