Home / 645,193,868.90-967,790,803.35-214,372,364.90

Finding the Fourth Proportional to 645,193,868.90, 967,790,803.35 and 214,372,364.90

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Solution

The fourth proportional to 645,193,868.90, 967,790,803.35 and 214,372,364.90 is: 321,558,547.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,193,868.90 : 967,790,803.35 = 214,372,364.90 : x
  2. Step 2: Convert to fraction form
    645,193,868.90/967,790,803.35 = 214,372,364.90/x
  3. Step 3: Cross multiply
    645,193,868.90x = 967,790,803.35 × 214,372,364.90
  4. Step 4: Simplify right side
    645,193,868.90x = 207,467,603,242,610,368
  5. Step 5: Solve for x
    x = 207,467,603,242,610,368/645,193,868.90
  6. Step 6: Final answer
    x = 321,558,547.35

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Double scale
Find fourth proportional to 645,193,869.90, 967,790,804.85 and 214,372,365.90
Similar ratio
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1.5x scale

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.