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Finding the Fourth Proportional to 859,347.72, 1,185,859.62 and 477,397.80

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Solution

The fourth proportional to 859,347.72, 1,185,859.62 and 477,397.80 is: 658,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,347.72 : 1,185,859.62 = 477,397.80 : x
  2. Step 2: Convert to fraction form
    859,347.72/1,185,859.62 = 477,397.80/x
  3. Step 3: Cross multiply
    859,347.72x = 1,185,859.62 × 477,397.80
  4. Step 4: Simplify right side
    859,347.72x = 566,126,773,696.84
  5. Step 5: Solve for x
    x = 566,126,773,696.84/859,347.72
  6. Step 6: Final answer
    x = 658,786.61

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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.