Home / 1,289,388.23-1,779,320.55-716,413.67

Finding the Fourth Proportional to 1,289,388.23, 1,779,320.55 and 716,413.67

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Solution

The fourth proportional to 1,289,388.23, 1,779,320.55 and 716,413.67 is: 988,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,388.23 : 1,779,320.55 = 716,413.67 : x
  2. Step 2: Convert to fraction form
    1,289,388.23/1,779,320.55 = 716,413.67/x
  3. Step 3: Cross multiply
    1,289,388.23x = 1,779,320.55 × 716,413.67
  4. Step 4: Simplify right side
    1,289,388.23x = 1,274,729,556,435.32
  5. Step 5: Solve for x
    x = 1,274,729,556,435.32/1,289,388.23
  6. Step 6: Final answer
    x = 988,631.30

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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.