Home / 1,287,456.84-1,931,365.71-388,796.67

Finding the Fourth Proportional to 1,287,456.84, 1,931,365.71 and 388,796.67

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Solution

The fourth proportional to 1,287,456.84, 1,931,365.71 and 388,796.67 is: 583,249.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,456.84 : 1,931,365.71 = 388,796.67 : x
  2. Step 2: Convert to fraction form
    1,287,456.84/1,931,365.71 = 388,796.67/x
  3. Step 3: Cross multiply
    1,287,456.84x = 1,931,365.71 × 388,796.67
  4. Step 4: Simplify right side
    1,287,456.84x = 750,908,556,600.19
  5. Step 5: Solve for x
    x = 750,908,556,600.19/1,287,456.84
  6. Step 6: Final answer
    x = 583,249.50

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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.