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Finding the Fourth Proportional to 584,739.80, 877,109.70 and 285,412.40

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Solution

The fourth proportional to 584,739.80, 877,109.70 and 285,412.40 is: 428,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,739.80 : 877,109.70 = 285,412.40 : x
  2. Step 2: Convert to fraction form
    584,739.80/877,109.70 = 285,412.40/x
  3. Step 3: Cross multiply
    584,739.80x = 877,109.70 × 285,412.40
  4. Step 4: Simplify right side
    584,739.80x = 250,337,984,540.28
  5. Step 5: Solve for x
    x = 250,337,984,540.28/584,739.80
  6. Step 6: Final answer
    x = 428,118.60

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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.