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Finding the Fourth Proportional to 1,602,877.72, 2,211,971.21 and 877,769.78

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Solution

The fourth proportional to 1,602,877.72, 2,211,971.21 and 877,769.78 is: 1,211,322.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,602,877.72 : 2,211,971.21 = 877,769.78 : x
  2. Step 2: Convert to fraction form
    1,602,877.72/2,211,971.21 = 877,769.78/x
  3. Step 3: Cross multiply
    1,602,877.72x = 2,211,971.21 × 877,769.78
  4. Step 4: Simplify right side
    1,602,877.72x = 1,941,601,482,368.03
  5. Step 5: Solve for x
    x = 1,941,601,482,368.03/1,602,877.72
  6. Step 6: Final answer
    x = 1,211,322.27

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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.