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Finding the Fourth Proportional to 1,174,879, 1,621,337.34 and 638,335

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Solution

The fourth proportional to 1,174,879, 1,621,337.34 and 638,335 is: 880,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,879 : 1,621,337.34 = 638,335 : x
  2. Step 2: Convert to fraction form
    1,174,879/1,621,337.34 = 638,335/x
  3. Step 3: Cross multiply
    1,174,879x = 1,621,337.34 × 638,335
  4. Step 4: Simplify right side
    1,174,879x = 1,034,956,370,928.90
  5. Step 5: Solve for x
    x = 1,034,956,370,928.90/1,174,879
  6. Step 6: Final answer
    x = 880,904.65

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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.