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Finding the Fourth Proportional to 1,293,669.60, 1,939,813.20 and 544,869.60

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Solution

The fourth proportional to 1,293,669.60, 1,939,813.20 and 544,869.60 is: 817,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,669.60 : 1,939,813.20 = 544,869.60 : x
  2. Step 2: Convert to fraction form
    1,293,669.60/1,939,813.20 = 544,869.60/x
  3. Step 3: Cross multiply
    1,293,669.60x = 1,939,813.20 × 544,869.60
  4. Step 4: Simplify right side
    1,293,669.60x = 1,056,945,242,358.72
  5. Step 5: Solve for x
    x = 1,056,945,242,358.72/1,293,669.60
  6. Step 6: Final answer
    x = 817,013.28

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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.