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Finding the Fourth Proportional to 1,293,160.78, 1,784,562 and 720,200.98

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Solution

The fourth proportional to 1,293,160.78, 1,784,562 and 720,200.98 is: 993,877.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,160.78 : 1,784,562 = 720,200.98 : x
  2. Step 2: Convert to fraction form
    1,293,160.78/1,784,562 = 720,200.98/x
  3. Step 3: Cross multiply
    1,293,160.78x = 1,784,562 × 720,200.98
  4. Step 4: Simplify right side
    1,293,160.78x = 1,285,243,301,270.76
  5. Step 5: Solve for x
    x = 1,285,243,301,270.76/1,293,160.78
  6. Step 6: Final answer
    x = 993,877.42

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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.