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Finding the Fourth Proportional to 425,864,509.60, 638,796,764.40 and 183,527,413.60

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Solution

The fourth proportional to 425,864,509.60, 638,796,764.40 and 183,527,413.60 is: 275,291,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,864,509.60 : 638,796,764.40 = 183,527,413.60 : x
  2. Step 2: Convert to fraction form
    425,864,509.60/638,796,764.40 = 183,527,413.60/x
  3. Step 3: Cross multiply
    425,864,509.60x = 638,796,764.40 × 183,527,413.60
  4. Step 4: Simplify right side
    425,864,509.60x = 117,236,717,986,380,544
  5. Step 5: Solve for x
    x = 117,236,717,986,380,544/425,864,509.60
  6. Step 6: Final answer
    x = 275,291,120.40

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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.