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Finding the Fourth Proportional to 1,705,832, 2,354,255.52 and 990,440

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Solution

The fourth proportional to 1,705,832, 2,354,255.52 and 990,440 is: 1,366,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705,832 : 2,354,255.52 = 990,440 : x
  2. Step 2: Convert to fraction form
    1,705,832/2,354,255.52 = 990,440/x
  3. Step 3: Cross multiply
    1,705,832x = 2,354,255.52 × 990,440
  4. Step 4: Simplify right side
    1,705,832x = 2,331,748,837,228.80
  5. Step 5: Solve for x
    x = 2,331,748,837,228.80/1,705,832
  6. Step 6: Final answer
    x = 1,366,927.60

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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.