Home / 745,291.80-1,028,501.28-405,759.24

Finding the Fourth Proportional to 745,291.80, 1,028,501.28 and 405,759.24

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Solution

The fourth proportional to 745,291.80, 1,028,501.28 and 405,759.24 is: 559,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,291.80 : 1,028,501.28 = 405,759.24 : x
  2. Step 2: Convert to fraction form
    745,291.80/1,028,501.28 = 405,759.24/x
  3. Step 3: Cross multiply
    745,291.80x = 1,028,501.28 × 405,759.24
  4. Step 4: Simplify right side
    745,291.80x = 417,323,897,711.83
  5. Step 5: Solve for x
    x = 417,323,897,711.83/745,291.80
  6. Step 6: Final answer
    x = 559,946.99

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Double scale
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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.