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Finding the Fourth Proportional to 646,429,044.65, 969,779,747.81 and 209,695,627.67

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Solution

The fourth proportional to 646,429,044.65, 969,779,747.81 and 209,695,627.67 is: 314,587,617.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,429,044.65 : 969,779,747.81 = 209,695,627.67 : x
  2. Step 2: Convert to fraction form
    646,429,044.65/969,779,747.81 = 209,695,627.67/x
  3. Step 3: Cross multiply
    646,429,044.65x = 969,779,747.81 × 209,695,627.67
  4. Step 4: Simplify right side
    646,429,044.65x = 203,358,572,914,347,584
  5. Step 5: Solve for x
    x = 203,358,572,914,347,584/646,429,044.65
  6. Step 6: Final answer
    x = 314,587,617.31

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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.