Home / 745,428.79-1,028,663.66-455,525.11

Finding the Fourth Proportional to 745,428.79, 1,028,663.66 and 455,525.11

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Solution

The fourth proportional to 745,428.79, 1,028,663.66 and 455,525.11 is: 628,607.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,428.79 : 1,028,663.66 = 455,525.11 : x
  2. Step 2: Convert to fraction form
    745,428.79/1,028,663.66 = 455,525.11/x
  3. Step 3: Cross multiply
    745,428.79x = 1,028,663.66 × 455,525.11
  4. Step 4: Simplify right side
    745,428.79x = 468,582,125,441.66
  5. Step 5: Solve for x
    x = 468,582,125,441.66/745,428.79
  6. Step 6: Final answer
    x = 628,607.50

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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.