Home / 1,409,426,413.60-2,114,139,620.40-388,219,885.60

Finding the Fourth Proportional to 1,409,426,413.60, 2,114,139,620.40 and 388,219,885.60

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Solution

The fourth proportional to 1,409,426,413.60, 2,114,139,620.40 and 388,219,885.60 is: 582,329,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,426,413.60 : 2,114,139,620.40 = 388,219,885.60 : x
  2. Step 2: Convert to fraction form
    1,409,426,413.60/2,114,139,620.40 = 388,219,885.60/x
  3. Step 3: Cross multiply
    1,409,426,413.60x = 2,114,139,620.40 × 388,219,885.60
  4. Step 4: Simplify right side
    1,409,426,413.60x = 820,751,041,574,115,456
  5. Step 5: Solve for x
    x = 820,751,041,574,115,456/1,409,426,413.60
  6. Step 6: Final answer
    x = 582,329,828.40

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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.