Home / 926,303.08-1,278,321.12-518,401.72

Finding the Fourth Proportional to 926,303.08, 1,278,321.12 and 518,401.72

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Solution

The fourth proportional to 926,303.08, 1,278,321.12 and 518,401.72 is: 715,407.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,303.08 : 1,278,321.12 = 518,401.72 : x
  2. Step 2: Convert to fraction form
    926,303.08/1,278,321.12 = 518,401.72/x
  3. Step 3: Cross multiply
    926,303.08x = 1,278,321.12 × 518,401.72
  4. Step 4: Simplify right side
    926,303.08x = 662,683,867,320.33
  5. Step 5: Solve for x
    x = 662,683,867,320.33/926,303.08
  6. Step 6: Final answer
    x = 715,407.17

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Double scale
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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.