Home / 421,659,492.48-581,858,328.96-256,628,822.40

Finding the Fourth Proportional to 421,659,492.48, 581,858,328.96 and 256,628,822.40

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Solution

The fourth proportional to 421,659,492.48, 581,858,328.96 and 256,628,822.40 is: 354,128,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,659,492.48 : 581,858,328.96 = 256,628,822.40 : x
  2. Step 2: Convert to fraction form
    421,659,492.48/581,858,328.96 = 256,628,822.40/x
  3. Step 3: Cross multiply
    421,659,492.48x = 581,858,328.96 × 256,628,822.40
  4. Step 4: Simplify right side
    421,659,492.48x = 149,321,617,764,636,640
  5. Step 5: Solve for x
    x = 149,321,617,764,636,640/421,659,492.48
  6. Step 6: Final answer
    x = 354,128,438.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.