Home / 867,113.64-1,300,555.38-393,690.12

Finding the Fourth Proportional to 867,113.64, 1,300,555.38 and 393,690.12

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Solution

The fourth proportional to 867,113.64, 1,300,555.38 and 393,690.12 is: 590,482.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,113.64 : 1,300,555.38 = 393,690.12 : x
  2. Step 2: Convert to fraction form
    867,113.64/1,300,555.38 = 393,690.12/x
  3. Step 3: Cross multiply
    867,113.64x = 1,300,555.38 × 393,690.12
  4. Step 4: Simplify right side
    867,113.64x = 512,015,803,618.85
  5. Step 5: Solve for x
    x = 512,015,803,618.85/867,113.64
  6. Step 6: Final answer
    x = 590,482.93

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Double scale
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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.