Home / 745,316.73-1,028,536.65-405,784.98

Finding the Fourth Proportional to 745,316.73, 1,028,536.65 and 405,784.98

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Solution

The fourth proportional to 745,316.73, 1,028,536.65 and 405,784.98 is: 559,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,316.73 : 1,028,536.65 = 405,784.98 : x
  2. Step 2: Convert to fraction form
    745,316.73/1,028,536.65 = 405,784.98/x
  3. Step 3: Cross multiply
    745,316.73x = 1,028,536.65 × 405,784.98
  4. Step 4: Simplify right side
    745,316.73x = 417,364,723,949.52
  5. Step 5: Solve for x
    x = 417,364,723,949.52/745,316.73
  6. Step 6: Final answer
    x = 559,983.03

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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.