Home / 745,169.34-1,028,307.51-405,630.30

Finding the Fourth Proportional to 745,169.34, 1,028,307.51 and 405,630.30

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Solution

The fourth proportional to 745,169.34, 1,028,307.51 and 405,630.30 is: 559,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,169.34 : 1,028,307.51 = 405,630.30 : x
  2. Step 2: Convert to fraction form
    745,169.34/1,028,307.51 = 405,630.30/x
  3. Step 3: Cross multiply
    745,169.34x = 1,028,307.51 × 405,630.30
  4. Step 4: Simplify right side
    745,169.34x = 417,112,683,773.55
  5. Step 5: Solve for x
    x = 417,112,683,773.55/745,169.34
  6. Step 6: Final answer
    x = 559,755.56

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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.