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Finding the Fourth Proportional to 660,622.32, 911,659.71 and 358,816.32

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Solution

The fourth proportional to 660,622.32, 911,659.71 and 358,816.32 is: 495,167.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,622.32 : 911,659.71 = 358,816.32 : x
  2. Step 2: Convert to fraction form
    660,622.32/911,659.71 = 358,816.32/x
  3. Step 3: Cross multiply
    660,622.32x = 911,659.71 × 358,816.32
  4. Step 4: Simplify right side
    660,622.32x = 327,118,382,234.47
  5. Step 5: Solve for x
    x = 327,118,382,234.47/660,622.32
  6. Step 6: Final answer
    x = 495,167.01

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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.