Home / 1,289,356.94-1,931,377.50-755,258.72

Finding the Fourth Proportional to 1,289,356.94, 1,931,377.50 and 755,258.72

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Solution

The fourth proportional to 1,289,356.94, 1,931,377.50 and 755,258.72 is: 1,131,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,356.94 : 1,931,377.50 = 755,258.72 : x
  2. Step 2: Convert to fraction form
    1,289,356.94/1,931,377.50 = 755,258.72/x
  3. Step 3: Cross multiply
    1,289,356.94x = 1,931,377.50 × 755,258.72
  4. Step 4: Simplify right side
    1,289,356.94x = 1,458,689,698,486.80
  5. Step 5: Solve for x
    x = 1,458,689,698,486.80/1,289,356.94
  6. Step 6: Final answer
    x = 1,131,331.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.