Home / 745,642.39-1,028,923.29-418,929.82

Finding the Fourth Proportional to 745,642.39, 1,028,923.29 and 418,929.82

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Solution

The fourth proportional to 745,642.39, 1,028,923.29 and 418,929.82 is: 578,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,642.39 : 1,028,923.29 = 418,929.82 : x
  2. Step 2: Convert to fraction form
    745,642.39/1,028,923.29 = 418,929.82/x
  3. Step 3: Cross multiply
    745,642.39x = 1,028,923.29 × 418,929.82
  4. Step 4: Simplify right side
    745,642.39x = 431,046,648,673.51
  5. Step 5: Solve for x
    x = 431,046,648,673.51/745,642.39
  6. Step 6: Final answer
    x = 578,087.64

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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.