Home / 745,244.79-1,028,441.67-405,715.47

Finding the Fourth Proportional to 745,244.79, 1,028,441.67 and 405,715.47

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Solution

The fourth proportional to 745,244.79, 1,028,441.67 and 405,715.47 is: 559,889.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,244.79 : 1,028,441.67 = 405,715.47 : x
  2. Step 2: Convert to fraction form
    745,244.79/1,028,441.67 = 405,715.47/x
  3. Step 3: Cross multiply
    745,244.79x = 1,028,441.67 × 405,715.47
  4. Step 4: Simplify right side
    745,244.79x = 417,254,695,511.64
  5. Step 5: Solve for x
    x = 417,254,695,511.64/745,244.79
  6. Step 6: Final answer
    x = 559,889.45

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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.