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Finding the Fourth Proportional to 578,284.40, 867,815.40 and 325,564.40

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Solution

The fourth proportional to 578,284.40, 867,815.40 and 325,564.40 is: 488,565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,284.40 : 867,815.40 = 325,564.40 : x
  2. Step 2: Convert to fraction form
    578,284.40/867,815.40 = 325,564.40/x
  3. Step 3: Cross multiply
    578,284.40x = 867,815.40 × 325,564.40
  4. Step 4: Simplify right side
    578,284.40x = 282,529,800,011.76
  5. Step 5: Solve for x
    x = 282,529,800,011.76/578,284.40
  6. Step 6: Final answer
    x = 488,565.49

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Double scale
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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.