Home / 340,781,620.40-511,172,430.60-280,315,444.40

Finding the Fourth Proportional to 340,781,620.40, 511,172,430.60 and 280,315,444.40

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Solution

The fourth proportional to 340,781,620.40, 511,172,430.60 and 280,315,444.40 is: 420,473,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,781,620.40 : 511,172,430.60 = 280,315,444.40 : x
  2. Step 2: Convert to fraction form
    340,781,620.40/511,172,430.60 = 280,315,444.40/x
  3. Step 3: Cross multiply
    340,781,620.40x = 511,172,430.60 × 280,315,444.40
  4. Step 4: Simplify right side
    340,781,620.40x = 143,289,527,048,667,152
  5. Step 5: Solve for x
    x = 143,289,527,048,667,152/340,781,620.40
  6. Step 6: Final answer
    x = 420,473,166.60

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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.