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Finding the Fourth Proportional to 771,600.87, 1,064,797.70 and 427,435.74

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Solution

The fourth proportional to 771,600.87, 1,064,797.70 and 427,435.74 is: 589,854.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,600.87 : 1,064,797.70 = 427,435.74 : x
  2. Step 2: Convert to fraction form
    771,600.87/1,064,797.70 = 427,435.74/x
  3. Step 3: Cross multiply
    771,600.87x = 1,064,797.70 × 427,435.74
  4. Step 4: Simplify right side
    771,600.87x = 455,132,590,712.62
  5. Step 5: Solve for x
    x = 455,132,590,712.62/771,600.87
  6. Step 6: Final answer
    x = 589,854.95

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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.