Home / 1,171,821.69-1,617,126.62-688,407.21

Finding the Fourth Proportional to 1,171,821.69, 1,617,126.62 and 688,407.21

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Solution

The fourth proportional to 1,171,821.69, 1,617,126.62 and 688,407.21 is: 950,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,821.69 : 1,617,126.62 = 688,407.21 : x
  2. Step 2: Convert to fraction form
    1,171,821.69/1,617,126.62 = 688,407.21/x
  3. Step 3: Cross multiply
    1,171,821.69x = 1,617,126.62 × 688,407.21
  4. Step 4: Simplify right side
    1,171,821.69x = 1,113,241,621,248.89
  5. Step 5: Solve for x
    x = 1,113,241,621,248.89/1,171,821.69
  6. Step 6: Final answer
    x = 950,009.40

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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.