Home / 646,390,246.90-969,721,709.55-209,657,012.98

Finding the Fourth Proportional to 646,390,246.90, 969,721,709.55 and 209,657,012.98

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Solution

The fourth proportional to 646,390,246.90, 969,721,709.55 and 209,657,012.98 is: 314,529,741.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,390,246.90 : 969,721,709.55 = 209,657,012.98 : x
  2. Step 2: Convert to fraction form
    646,390,246.90/969,721,709.55 = 209,657,012.98/x
  3. Step 3: Cross multiply
    646,390,246.90x = 969,721,709.55 × 209,657,012.98
  4. Step 4: Simplify right side
    646,390,246.90x = 203,308,957,046,112,128
  5. Step 5: Solve for x
    x = 203,308,957,046,112,128/646,390,246.90
  6. Step 6: Final answer
    x = 314,529,741.16

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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.