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Finding the Fourth Proportional to 776,710.70, 1,071,844 and 427,860.86

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Solution

The fourth proportional to 776,710.70, 1,071,844 and 427,860.86 is: 590,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,710.70 : 1,071,844 = 427,860.86 : x
  2. Step 2: Convert to fraction form
    776,710.70/1,071,844 = 427,860.86/x
  3. Step 3: Cross multiply
    776,710.70x = 1,071,844 × 427,860.86
  4. Step 4: Simplify right side
    776,710.70x = 458,600,095,625.84
  5. Step 5: Solve for x
    x = 458,600,095,625.84/776,710.70
  6. Step 6: Final answer
    x = 590,438.75

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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.