Home / 646,429,043.40-969,779,745.94-209,695,626.42

Finding the Fourth Proportional to 646,429,043.40, 969,779,745.94 and 209,695,626.42

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Solution

The fourth proportional to 646,429,043.40, 969,779,745.94 and 209,695,626.42 is: 314,587,615.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,429,043.40 : 969,779,745.94 = 209,695,626.42 : x
  2. Step 2: Convert to fraction form
    646,429,043.40/969,779,745.94 = 209,695,626.42/x
  3. Step 3: Cross multiply
    646,429,043.40x = 969,779,745.94 × 209,695,626.42
  4. Step 4: Simplify right side
    646,429,043.40x = 203,358,571,314,316,736
  5. Step 5: Solve for x
    x = 203,358,571,314,316,736/646,429,043.40
  6. Step 6: Final answer
    x = 314,587,615.44

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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.