Home / 913,145.55-1,260,178-505,240.76

Finding the Fourth Proportional to 913,145.55, 1,260,178 and 505,240.76

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Solution

The fourth proportional to 913,145.55, 1,260,178 and 505,240.76 is: 697,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,145.55 : 1,260,178 = 505,240.76 : x
  2. Step 2: Convert to fraction form
    913,145.55/1,260,178 = 505,240.76/x
  3. Step 3: Cross multiply
    913,145.55x = 1,260,178 × 505,240.76
  4. Step 4: Simplify right side
    913,145.55x = 636,693,290,455.28
  5. Step 5: Solve for x
    x = 636,693,290,455.28/913,145.55
  6. Step 6: Final answer
    x = 697,252.80

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Half scale
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Double scale
Find fourth proportional to 913,146.55, 1,260,179.38 and 505,241.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.