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Finding the Fourth Proportional to 470,594.40, 705,891.60 and 439,490.40

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Solution

The fourth proportional to 470,594.40, 705,891.60 and 439,490.40 is: 659,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,594.40 : 705,891.60 = 439,490.40 : x
  2. Step 2: Convert to fraction form
    470,594.40/705,891.60 = 439,490.40/x
  3. Step 3: Cross multiply
    470,594.40x = 705,891.60 × 439,490.40
  4. Step 4: Simplify right side
    470,594.40x = 310,232,581,640.64
  5. Step 5: Solve for x
    x = 310,232,581,640.64/470,594.40
  6. Step 6: Final answer
    x = 659,235.60

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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.