Home / 400,362,896.12-600,428,345.70-120,232,509.08

Finding the Fourth Proportional to 400,362,896.12, 600,428,345.70 and 120,232,509.08

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Solution

The fourth proportional to 400,362,896.12, 600,428,345.70 and 120,232,509.08 is: 180,313,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,362,896.12 : 600,428,345.70 = 120,232,509.08 : x
  2. Step 2: Convert to fraction form
    400,362,896.12/600,428,345.70 = 120,232,509.08/x
  3. Step 3: Cross multiply
    400,362,896.12x = 600,428,345.70 × 120,232,509.08
  4. Step 4: Simplify right side
    400,362,896.12x = 72,191,006,526,264,640
  5. Step 5: Solve for x
    x = 72,191,006,526,264,640/400,362,896.12
  6. Step 6: Final answer
    x = 180,313,928.25

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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.