Home / 664,904.81-997,497.34-215,590.65

Finding the Fourth Proportional to 664,904.81, 997,497.34 and 215,590.65

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Solution

The fourth proportional to 664,904.81, 997,497.34 and 215,590.65 is: 323,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,904.81 : 997,497.34 = 215,590.65 : x
  2. Step 2: Convert to fraction form
    664,904.81/997,497.34 = 215,590.65/x
  3. Step 3: Cross multiply
    664,904.81x = 997,497.34 × 215,590.65
  4. Step 4: Simplify right side
    664,904.81x = 215,051,095,624.28
  5. Step 5: Solve for x
    x = 215,051,095,624.28/664,904.81
  6. Step 6: Final answer
    x = 323,431.40

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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.