Home / 858,491.36-1,287,737.04-326,012.45

Finding the Fourth Proportional to 858,491.36, 1,287,737.04 and 326,012.45

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Solution

The fourth proportional to 858,491.36, 1,287,737.04 and 326,012.45 is: 489,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,491.36 : 1,287,737.04 = 326,012.45 : x
  2. Step 2: Convert to fraction form
    858,491.36/1,287,737.04 = 326,012.45/x
  3. Step 3: Cross multiply
    858,491.36x = 1,287,737.04 × 326,012.45
  4. Step 4: Simplify right side
    858,491.36x = 419,818,300,316.19
  5. Step 5: Solve for x
    x = 419,818,300,316.19/858,491.36
  6. Step 6: Final answer
    x = 489,018.67

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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.