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Finding the Fourth Proportional to 704,786.32, 972,612.39 and 382,499.20

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Solution

The fourth proportional to 704,786.32, 972,612.39 and 382,499.20 is: 527,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,786.32 : 972,612.39 = 382,499.20 : x
  2. Step 2: Convert to fraction form
    704,786.32/972,612.39 = 382,499.20/x
  3. Step 3: Cross multiply
    704,786.32x = 972,612.39 × 382,499.20
  4. Step 4: Simplify right side
    704,786.32x = 372,023,461,085.09
  5. Step 5: Solve for x
    x = 372,023,461,085.09/704,786.32
  6. Step 6: Final answer
    x = 527,852.84

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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.