Home / 405,215,680.96-607,674,627.12-139,245,966.56

Finding the Fourth Proportional to 405,215,680.96, 607,674,627.12 and 139,245,966.56

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Solution

The fourth proportional to 405,215,680.96, 607,674,627.12 and 139,245,966.56 is: 208,817,784.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,215,680.96 : 607,674,627.12 = 139,245,966.56 : x
  2. Step 2: Convert to fraction form
    405,215,680.96/607,674,627.12 = 139,245,966.56/x
  3. Step 3: Cross multiply
    405,215,680.96x = 607,674,627.12 × 139,245,966.56
  4. Step 4: Simplify right side
    405,215,680.96x = 84,616,240,807,311,984
  5. Step 5: Solve for x
    x = 84,616,240,807,311,984/405,215,680.96
  6. Step 6: Final answer
    x = 208,817,784.66

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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.