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Finding the Fourth Proportional to 607,510.80, 911,266.20 and 495,317.70

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Solution

The fourth proportional to 607,510.80, 911,266.20 and 495,317.70 is: 742,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,510.80 : 911,266.20 = 495,317.70 : x
  2. Step 2: Convert to fraction form
    607,510.80/911,266.20 = 495,317.70/x
  3. Step 3: Cross multiply
    607,510.80x = 911,266.20 × 495,317.70
  4. Step 4: Simplify right side
    607,510.80x = 451,366,278,271.74
  5. Step 5: Solve for x
    x = 451,366,278,271.74/607,510.80
  6. Step 6: Final answer
    x = 742,976.55

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Double scale
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Similar ratio
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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.