Home / 745,290.60-1,028,467.14-405,758.12

Finding the Fourth Proportional to 745,290.60, 1,028,467.14 and 405,758.12

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Solution

The fourth proportional to 745,290.60, 1,028,467.14 and 405,758.12 is: 559,927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,290.60 : 1,028,467.14 = 405,758.12 : x
  2. Step 2: Convert to fraction form
    745,290.60/1,028,467.14 = 405,758.12/x
  3. Step 3: Cross multiply
    745,290.60x = 1,028,467.14 × 405,758.12
  4. Step 4: Simplify right side
    745,290.60x = 417,308,893,208.18
  5. Step 5: Solve for x
    x = 417,308,893,208.18/745,290.60
  6. Step 6: Final answer
    x = 559,927.76

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1.5x scale

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.