Home / 1,223,876.65-1,688,426.62-764,678.41

Finding the Fourth Proportional to 1,223,876.65, 1,688,426.62 and 764,678.41

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Solution

The fourth proportional to 1,223,876.65, 1,688,426.62 and 764,678.41 is: 1,054,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,876.65 : 1,688,426.62 = 764,678.41 : x
  2. Step 2: Convert to fraction form
    1,223,876.65/1,688,426.62 = 764,678.41/x
  3. Step 3: Cross multiply
    1,223,876.65x = 1,688,426.62 × 764,678.41
  4. Step 4: Simplify right side
    1,223,876.65x = 1,291,103,377,050.51
  5. Step 5: Solve for x
    x = 1,291,103,377,050.51/1,223,876.65
  6. Step 6: Final answer
    x = 1,054,929.33

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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.