Home / 804,639.20-1,207,880.40-472,402.40

Finding the Fourth Proportional to 804,639.20, 1,207,880.40 and 472,402.40

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Solution

The fourth proportional to 804,639.20, 1,207,880.40 and 472,402.40 is: 709,144.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,639.20 : 1,207,880.40 = 472,402.40 : x
  2. Step 2: Convert to fraction form
    804,639.20/1,207,880.40 = 472,402.40/x
  3. Step 3: Cross multiply
    804,639.20x = 1,207,880.40 × 472,402.40
  4. Step 4: Simplify right side
    804,639.20x = 570,605,599,872.96
  5. Step 5: Solve for x
    x = 570,605,599,872.96/804,639.20
  6. Step 6: Final answer
    x = 709,144.67

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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.