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Finding the Fourth Proportional to 607,947.20, 911,920.80 and 558,180.80

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Solution

The fourth proportional to 607,947.20, 911,920.80 and 558,180.80 is: 837,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,947.20 : 911,920.80 = 558,180.80 : x
  2. Step 2: Convert to fraction form
    607,947.20/911,920.80 = 558,180.80/x
  3. Step 3: Cross multiply
    607,947.20x = 911,920.80 × 558,180.80
  4. Step 4: Simplify right side
    607,947.20x = 509,016,681,680.64
  5. Step 5: Solve for x
    x = 509,016,681,680.64/607,947.20
  6. Step 6: Final answer
    x = 837,271.20

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1.5x scale

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.