Home / 1,685,861.96-2,326,488.21-921,915.32

Finding the Fourth Proportional to 1,685,861.96, 2,326,488.21 and 921,915.32

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Solution

The fourth proportional to 1,685,861.96, 2,326,488.21 and 921,915.32 is: 1,272,242.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685,861.96 : 2,326,488.21 = 921,915.32 : x
  2. Step 2: Convert to fraction form
    1,685,861.96/2,326,488.21 = 921,915.32/x
  3. Step 3: Cross multiply
    1,685,861.96x = 2,326,488.21 × 921,915.32
  4. Step 4: Simplify right side
    1,685,861.96x = 2,144,825,110,965.94
  5. Step 5: Solve for x
    x = 2,144,825,110,965.94/1,685,861.96
  6. Step 6: Final answer
    x = 1,272,242.43

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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.