Home / 745,170.34-1,028,308.89-405,631.30

Finding the Fourth Proportional to 745,170.34, 1,028,308.89 and 405,631.30

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Solution

The fourth proportional to 745,170.34, 1,028,308.89 and 405,631.30 is: 559,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,170.34 : 1,028,308.89 = 405,631.30 : x
  2. Step 2: Convert to fraction form
    745,170.34/1,028,308.89 = 405,631.30/x
  3. Step 3: Cross multiply
    745,170.34x = 1,028,308.89 × 405,631.30
  4. Step 4: Simplify right side
    745,170.34x = 417,114,271,852.26
  5. Step 5: Solve for x
    x = 417,114,271,852.26/745,170.34
  6. Step 6: Final answer
    x = 559,756.94

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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.