Home / 1,280,117.96-1,920,169.98-521,956.36

Finding the Fourth Proportional to 1,280,117.96, 1,920,169.98 and 521,956.36

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Solution

The fourth proportional to 1,280,117.96, 1,920,169.98 and 521,956.36 is: 782,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,117.96 : 1,920,169.98 = 521,956.36 : x
  2. Step 2: Convert to fraction form
    1,280,117.96/1,920,169.98 = 521,956.36/x
  3. Step 3: Cross multiply
    1,280,117.96x = 1,920,169.98 × 521,956.36
  4. Step 4: Simplify right side
    1,280,117.96x = 1,002,244,933,342.07
  5. Step 5: Solve for x
    x = 1,002,244,933,342.07/1,280,117.96
  6. Step 6: Final answer
    x = 782,931.70

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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.