Home / 1,424,376.80-2,136,856.80-478,426.40

Finding the Fourth Proportional to 1,424,376.80, 2,136,856.80 and 478,426.40

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Solution

The fourth proportional to 1,424,376.80, 2,136,856.80 and 478,426.40 is: 717,737.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,376.80 : 2,136,856.80 = 478,426.40 : x
  2. Step 2: Convert to fraction form
    1,424,376.80/2,136,856.80 = 478,426.40/x
  3. Step 3: Cross multiply
    1,424,376.80x = 2,136,856.80 × 478,426.40
  4. Step 4: Simplify right side
    1,424,376.80x = 1,022,328,706,139.52
  5. Step 5: Solve for x
    x = 1,022,328,706,139.52/1,424,376.80
  6. Step 6: Final answer
    x = 717,737.54

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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.