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Finding the Fourth Proportional to 1,008,962, 1,392,377 and 556,269.20

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Solution

The fourth proportional to 1,008,962, 1,392,377 and 556,269.20 is: 767,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,962 : 1,392,377 = 556,269.20 : x
  2. Step 2: Convert to fraction form
    1,008,962/1,392,377 = 556,269.20/x
  3. Step 3: Cross multiply
    1,008,962x = 1,392,377 × 556,269.20
  4. Step 4: Simplify right side
    1,008,962x = 774,536,439,888.40
  5. Step 5: Solve for x
    x = 774,536,439,888.40/1,008,962
  6. Step 6: Final answer
    x = 767,656.70

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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.