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Finding the Fourth Proportional to 434,809.90, 607,489.70 and 434,809.90

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Solution

The fourth proportional to 434,809.90, 607,489.70 and 434,809.90 is: 607,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,809.90 : 607,489.70 = 434,809.90 : x
  2. Step 2: Convert to fraction form
    434,809.90/607,489.70 = 434,809.90/x
  3. Step 3: Cross multiply
    434,809.90x = 607,489.70 × 434,809.90
  4. Step 4: Simplify right side
    434,809.90x = 264,142,535,708.03
  5. Step 5: Solve for x
    x = 264,142,535,708.03/434,809.90
  6. Step 6: Final answer
    x = 607,489.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.