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Finding the Fourth Proportional to 660,917.16, 990,045.16 and 305,441.64

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Solution

The fourth proportional to 660,917.16, 990,045.16 and 305,441.64 is: 457,547.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,917.16 : 990,045.16 = 305,441.64 : x
  2. Step 2: Convert to fraction form
    660,917.16/990,045.16 = 305,441.64/x
  3. Step 3: Cross multiply
    660,917.16x = 990,045.16 × 305,441.64
  4. Step 4: Simplify right side
    660,917.16x = 302,401,017,344.46
  5. Step 5: Solve for x
    x = 302,401,017,344.46/660,917.16
  6. Step 6: Final answer
    x = 457,547.53

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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.