Home / 678,445,221.70-1,017,667,832.55-445,992,928.30

Finding the Fourth Proportional to 678,445,221.70, 1,017,667,832.55 and 445,992,928.30

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Solution

The fourth proportional to 678,445,221.70, 1,017,667,832.55 and 445,992,928.30 is: 668,989,392.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,445,221.70 : 1,017,667,832.55 = 445,992,928.30 : x
  2. Step 2: Convert to fraction form
    678,445,221.70/1,017,667,832.55 = 445,992,928.30/x
  3. Step 3: Cross multiply
    678,445,221.70x = 1,017,667,832.55 × 445,992,928.30
  4. Step 4: Simplify right side
    678,445,221.70x = 453,872,656,675,688,576
  5. Step 5: Solve for x
    x = 453,872,656,675,688,576/678,445,221.70
  6. Step 6: Final answer
    x = 668,989,392.45

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Double scale
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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.