Home / 980,790.48-1,354,376.16-618,856.56

Finding the Fourth Proportional to 980,790.48, 1,354,376.16 and 618,856.56

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Solution

The fourth proportional to 980,790.48, 1,354,376.16 and 618,856.56 is: 854,580.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,790.48 : 1,354,376.16 = 618,856.56 : x
  2. Step 2: Convert to fraction form
    980,790.48/1,354,376.16 = 618,856.56/x
  3. Step 3: Cross multiply
    980,790.48x = 1,354,376.16 × 618,856.56
  4. Step 4: Simplify right side
    980,790.48x = 838,164,571,323.61
  5. Step 5: Solve for x
    x = 838,164,571,323.61/980,790.48
  6. Step 6: Final answer
    x = 854,580.66

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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.