Home / 1,120,386,529.44-1,680,660,509.04-430,293,784.32

Finding the Fourth Proportional to 1,120,386,529.44, 1,680,660,509.04 and 430,293,784.32

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Solution

The fourth proportional to 1,120,386,529.44, 1,680,660,509.04 and 430,293,784.32 is: 645,471,675.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,386,529.44 : 1,680,660,509.04 = 430,293,784.32 : x
  2. Step 2: Convert to fraction form
    1,120,386,529.44/1,680,660,509.04 = 430,293,784.32/x
  3. Step 3: Cross multiply
    1,120,386,529.44x = 1,680,660,509.04 × 430,293,784.32
  4. Step 4: Simplify right side
    1,120,386,529.44x = 723,177,770,591,999,104
  5. Step 5: Solve for x
    x = 723,177,770,591,999,104/1,120,386,529.44
  6. Step 6: Final answer
    x = 645,471,675.70

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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.