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Finding the Fourth Proportional to 660,752.75, 911,838.80 and 358,946.75

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Solution

The fourth proportional to 660,752.75, 911,838.80 and 358,946.75 is: 495,346.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,752.75 : 911,838.80 = 358,946.75 : x
  2. Step 2: Convert to fraction form
    660,752.75/911,838.80 = 358,946.75/x
  3. Step 3: Cross multiply
    660,752.75x = 911,838.80 × 358,946.75
  4. Step 4: Simplify right side
    660,752.75x = 327,301,573,783.90
  5. Step 5: Solve for x
    x = 327,301,573,783.90/660,752.75
  6. Step 6: Final answer
    x = 495,346.52

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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.