Home / 1,340,267.51-1,849,569.09-728,421.66

Finding the Fourth Proportional to 1,340,267.51, 1,849,569.09 and 728,421.66

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Solution

The fourth proportional to 1,340,267.51, 1,849,569.09 and 728,421.66 is: 1,005,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,267.51 : 1,849,569.09 = 728,421.66 : x
  2. Step 2: Convert to fraction form
    1,340,267.51/1,849,569.09 = 728,421.66/x
  3. Step 3: Cross multiply
    1,340,267.51x = 1,849,569.09 × 728,421.66
  4. Step 4: Simplify right side
    1,340,267.51x = 1,347,266,184,090.91
  5. Step 5: Solve for x
    x = 1,347,266,184,090.91/1,340,267.51
  6. Step 6: Final answer
    x = 1,005,221.85

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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.