Home / 761,438.86-1,050,786.85-417,220.09

Finding the Fourth Proportional to 761,438.86, 1,050,786.85 and 417,220.09

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Solution

The fourth proportional to 761,438.86, 1,050,786.85 and 417,220.09 is: 575,764.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,438.86 : 1,050,786.85 = 417,220.09 : x
  2. Step 2: Convert to fraction form
    761,438.86/1,050,786.85 = 417,220.09/x
  3. Step 3: Cross multiply
    761,438.86x = 1,050,786.85 × 417,220.09
  4. Step 4: Simplify right side
    761,438.86x = 438,409,384,127.82
  5. Step 5: Solve for x
    x = 438,409,384,127.82/761,438.86
  6. Step 6: Final answer
    x = 575,764.39

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Double scale
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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.