Home / 1,280,784.96-1,920,140.64-533,390.40

Finding the Fourth Proportional to 1,280,784.96, 1,920,140.64 and 533,390.40

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Solution

The fourth proportional to 1,280,784.96, 1,920,140.64 and 533,390.40 is: 799,653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,784.96 : 1,920,140.64 = 533,390.40 : x
  2. Step 2: Convert to fraction form
    1,280,784.96/1,920,140.64 = 533,390.40/x
  3. Step 3: Cross multiply
    1,280,784.96x = 1,920,140.64 × 533,390.40
  4. Step 4: Simplify right side
    1,280,784.96x = 1,024,184,584,025.86
  5. Step 5: Solve for x
    x = 1,024,184,584,025.86/1,280,784.96
  6. Step 6: Final answer
    x = 799,653.82

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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.