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Finding the Fourth Proportional to 660,211.48, 911,113.68 and 373,725.64

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Solution

The fourth proportional to 660,211.48, 911,113.68 and 373,725.64 is: 515,753.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,211.48 : 911,113.68 = 373,725.64 : x
  2. Step 2: Convert to fraction form
    660,211.48/911,113.68 = 373,725.64/x
  3. Step 3: Cross multiply
    660,211.48x = 911,113.68 × 373,725.64
  4. Step 4: Simplify right side
    660,211.48x = 340,506,543,170.76
  5. Step 5: Solve for x
    x = 340,506,543,170.76/660,211.48
  6. Step 6: Final answer
    x = 515,753.74

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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.