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Finding the Fourth Proportional to 877,908.78, 1,211,612.44 and 495,960.16

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Solution

The fourth proportional to 877,908.78, 1,211,612.44 and 495,960.16 is: 684,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,908.78 : 1,211,612.44 = 495,960.16 : x
  2. Step 2: Convert to fraction form
    877,908.78/1,211,612.44 = 495,960.16/x
  3. Step 3: Cross multiply
    877,908.78x = 1,211,612.44 × 495,960.16
  4. Step 4: Simplify right side
    877,908.78x = 600,911,499,600.39
  5. Step 5: Solve for x
    x = 600,911,499,600.39/877,908.78
  6. Step 6: Final answer
    x = 684,480.57

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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.