Home / 434,830.80-651,942.45-257,246.40

Finding the Fourth Proportional to 434,830.80, 651,942.45 and 257,246.40

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Solution

The fourth proportional to 434,830.80, 651,942.45 and 257,246.40 is: 385,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,830.80 : 651,942.45 = 257,246.40 : x
  2. Step 2: Convert to fraction form
    434,830.80/651,942.45 = 257,246.40/x
  3. Step 3: Cross multiply
    434,830.80x = 651,942.45 × 257,246.40
  4. Step 4: Simplify right side
    434,830.80x = 167,709,848,269.68
  5. Step 5: Solve for x
    x = 167,709,848,269.68/434,830.80
  6. Step 6: Final answer
    x = 385,689.90

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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.