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Finding the Fourth Proportional to 578,287.40, 867,819.90 and 325,567.40

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Solution

The fourth proportional to 578,287.40, 867,819.90 and 325,567.40 is: 488,569.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,287.40 : 867,819.90 = 325,567.40 : x
  2. Step 2: Convert to fraction form
    578,287.40/867,819.90 = 325,567.40/x
  3. Step 3: Cross multiply
    578,287.40x = 867,819.90 × 325,567.40
  4. Step 4: Simplify right side
    578,287.40x = 282,533,868,511.26
  5. Step 5: Solve for x
    x = 282,533,868,511.26/578,287.40
  6. Step 6: Final answer
    x = 488,569.99

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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.