Home / 1,280,786.96-1,920,143.64-533,392.40

Finding the Fourth Proportional to 1,280,786.96, 1,920,143.64 and 533,392.40

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Solution

The fourth proportional to 1,280,786.96, 1,920,143.64 and 533,392.40 is: 799,656.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,786.96 : 1,920,143.64 = 533,392.40 : x
  2. Step 2: Convert to fraction form
    1,280,786.96/1,920,143.64 = 533,392.40/x
  3. Step 3: Cross multiply
    1,280,786.96x = 1,920,143.64 × 533,392.40
  4. Step 4: Simplify right side
    1,280,786.96x = 1,024,190,024,484.34
  5. Step 5: Solve for x
    x = 1,024,190,024,484.34/1,280,786.96
  6. Step 6: Final answer
    x = 799,656.82

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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.