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Finding the Fourth Proportional to 611,201.20, 916,801.80 and 556,088.80

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Solution

The fourth proportional to 611,201.20, 916,801.80 and 556,088.80 is: 834,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,201.20 : 916,801.80 = 556,088.80 : x
  2. Step 2: Convert to fraction form
    611,201.20/916,801.80 = 556,088.80/x
  3. Step 3: Cross multiply
    611,201.20x = 916,801.80 × 556,088.80
  4. Step 4: Simplify right side
    611,201.20x = 509,823,212,799.84
  5. Step 5: Solve for x
    x = 509,823,212,799.84/611,201.20
  6. Step 6: Final answer
    x = 834,133.20

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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.