Home / 1,139,390.48-1,709,083.56-429,577.76

Finding the Fourth Proportional to 1,139,390.48, 1,709,083.56 and 429,577.76

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Solution

The fourth proportional to 1,139,390.48, 1,709,083.56 and 429,577.76 is: 644,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,390.48 : 1,709,083.56 = 429,577.76 : x
  2. Step 2: Convert to fraction form
    1,139,390.48/1,709,083.56 = 429,577.76/x
  3. Step 3: Cross multiply
    1,139,390.48x = 1,709,083.56 × 429,577.76
  4. Step 4: Simplify right side
    1,139,390.48x = 734,184,287,357.63
  5. Step 5: Solve for x
    x = 734,184,287,357.63/1,139,390.48
  6. Step 6: Final answer
    x = 644,365.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.