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Finding the Fourth Proportional to 771,608.77, 1,064,808.54 and 427,443.62

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Solution

The fourth proportional to 771,608.77, 1,064,808.54 and 427,443.62 is: 589,865.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,608.77 : 1,064,808.54 = 427,443.62 : x
  2. Step 2: Convert to fraction form
    771,608.77/1,064,808.54 = 427,443.62/x
  3. Step 3: Cross multiply
    771,608.77x = 1,064,808.54 × 427,443.62
  4. Step 4: Simplify right side
    771,608.77x = 455,145,611,620.47
  5. Step 5: Solve for x
    x = 455,145,611,620.47/771,608.77
  6. Step 6: Final answer
    x = 589,865.79

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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.