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Finding the Fourth Proportional to 660,483.38, 911,746.05 and 445,914.05

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Solution

The fourth proportional to 660,483.38, 911,746.05 and 445,914.05 is: 615,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,483.38 : 911,746.05 = 445,914.05 : x
  2. Step 2: Convert to fraction form
    660,483.38/911,746.05 = 445,914.05/x
  3. Step 3: Cross multiply
    660,483.38x = 911,746.05 × 445,914.05
  4. Step 4: Simplify right side
    660,483.38x = 406,560,373,727.00
  5. Step 5: Solve for x
    x = 406,560,373,727.00/660,483.38
  6. Step 6: Final answer
    x = 615,549.74

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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.