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Finding the Fourth Proportional to 559,944.80, 839,917.20 and 260,325.80

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Solution

The fourth proportional to 559,944.80, 839,917.20 and 260,325.80 is: 390,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,944.80 : 839,917.20 = 260,325.80 : x
  2. Step 2: Convert to fraction form
    559,944.80/839,917.20 = 260,325.80/x
  3. Step 3: Cross multiply
    559,944.80x = 839,917.20 × 260,325.80
  4. Step 4: Simplify right side
    559,944.80x = 218,652,117,023.76
  5. Step 5: Solve for x
    x = 218,652,117,023.76/559,944.80
  6. Step 6: Final answer
    x = 390,488.70

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Half scale
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Double scale
Find fourth proportional to 559,945.80, 839,918.70 and 260,326.80
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.