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Finding the Fourth Proportional to 761,611.76, 1,051,035.74 and 417,444.92

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Solution

The fourth proportional to 761,611.76, 1,051,035.74 and 417,444.92 is: 576,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,611.76 : 1,051,035.74 = 417,444.92 : x
  2. Step 2: Convert to fraction form
    761,611.76/1,051,035.74 = 417,444.92/x
  3. Step 3: Cross multiply
    761,611.76x = 1,051,035.74 × 417,444.92
  4. Step 4: Simplify right side
    761,611.76x = 438,749,530,401.44
  5. Step 5: Solve for x
    x = 438,749,530,401.44/761,611.76
  6. Step 6: Final answer
    x = 576,080.30

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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.