Home / 445,312,892.40-669,313,031.40-386,190,409.20

Finding the Fourth Proportional to 445,312,892.40, 669,313,031.40 and 386,190,409.20

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Solution

The fourth proportional to 445,312,892.40, 669,313,031.40 and 386,190,409.20 is: 580,450,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,312,892.40 : 669,313,031.40 = 386,190,409.20 : x
  2. Step 2: Convert to fraction form
    445,312,892.40/669,313,031.40 = 386,190,409.20/x
  3. Step 3: Cross multiply
    445,312,892.40x = 669,313,031.40 × 386,190,409.20
  4. Step 4: Simplify right side
    445,312,892.40x = 258,482,273,479,258,432
  5. Step 5: Solve for x
    x = 258,482,273,479,258,432/445,312,892.40
  6. Step 6: Final answer
    x = 580,450,909.67

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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.