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Finding the Fourth Proportional to 559,939.80, 839,909.70 and 360,485.40

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Solution

The fourth proportional to 559,939.80, 839,909.70 and 360,485.40 is: 540,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,939.80 : 839,909.70 = 360,485.40 : x
  2. Step 2: Convert to fraction form
    559,939.80/839,909.70 = 360,485.40/x
  3. Step 3: Cross multiply
    559,939.80x = 839,909.70 × 360,485.40
  4. Step 4: Simplify right side
    559,939.80x = 302,775,184,168.38
  5. Step 5: Solve for x
    x = 302,775,184,168.38/559,939.80
  6. Step 6: Final answer
    x = 540,728.10

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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.