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Finding the Fourth Proportional to 1,353,557.63, 1,867,909.53 and 749,945.63

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Solution

The fourth proportional to 1,353,557.63, 1,867,909.53 and 749,945.63 is: 1,034,924.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,557.63 : 1,867,909.53 = 749,945.63 : x
  2. Step 2: Convert to fraction form
    1,353,557.63/1,867,909.53 = 749,945.63/x
  3. Step 3: Cross multiply
    1,353,557.63x = 1,867,909.53 × 749,945.63
  4. Step 4: Simplify right side
    1,353,557.63x = 1,400,830,579,919.31
  5. Step 5: Solve for x
    x = 1,400,830,579,919.31/1,353,557.63
  6. Step 6: Final answer
    x = 1,034,924.97

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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.