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Finding the Fourth Proportional to 426,752,886.60, 640,607,626.80 and 330,136,912.80

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Solution

The fourth proportional to 426,752,886.60, 640,607,626.80 and 330,136,912.80 is: 495,575,380.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,752,886.60 : 640,607,626.80 = 330,136,912.80 : x
  2. Step 2: Convert to fraction form
    426,752,886.60/640,607,626.80 = 330,136,912.80/x
  3. Step 3: Cross multiply
    426,752,886.60x = 640,607,626.80 × 330,136,912.80
  4. Step 4: Simplify right side
    426,752,886.60x = 211,488,224,227,886,528
  5. Step 5: Solve for x
    x = 211,488,224,227,886,528/426,752,886.60
  6. Step 6: Final answer
    x = 495,575,380.67

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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.