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Finding the Fourth Proportional to 611,477.20, 916,438.20 and 544,603.60

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Solution

The fourth proportional to 611,477.20, 916,438.20 and 544,603.60 is: 816,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,477.20 : 916,438.20 = 544,603.60 : x
  2. Step 2: Convert to fraction form
    611,477.20/916,438.20 = 544,603.60/x
  3. Step 3: Cross multiply
    611,477.20x = 916,438.20 × 544,603.60
  4. Step 4: Simplify right side
    611,477.20x = 499,095,542,897.52
  5. Step 5: Solve for x
    x = 499,095,542,897.52/611,477.20
  6. Step 6: Final answer
    x = 816,212.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.