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Finding the Fourth Proportional to 660,659.04, 911,710.35 and 358,853.04

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Solution

The fourth proportional to 660,659.04, 911,710.35 and 358,853.04 is: 495,217.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,659.04 : 911,710.35 = 358,853.04 : x
  2. Step 2: Convert to fraction form
    660,659.04/911,710.35 = 358,853.04/x
  3. Step 3: Cross multiply
    660,659.04x = 911,710.35 × 358,853.04
  4. Step 4: Simplify right side
    660,659.04x = 327,170,030,696.96
  5. Step 5: Solve for x
    x = 327,170,030,696.96/660,659.04
  6. Step 6: Final answer
    x = 495,217.67

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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.