Home / 287,593,515.20-431,390,272.80-195,760,510.40

Finding the Fourth Proportional to 287,593,515.20, 431,390,272.80 and 195,760,510.40

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Solution

The fourth proportional to 287,593,515.20, 431,390,272.80 and 195,760,510.40 is: 293,640,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,593,515.20 : 431,390,272.80 = 195,760,510.40 : x
  2. Step 2: Convert to fraction form
    287,593,515.20/431,390,272.80 = 195,760,510.40/x
  3. Step 3: Cross multiply
    287,593,515.20x = 431,390,272.80 × 195,760,510.40
  4. Step 4: Simplify right side
    287,593,515.20x = 84,449,179,984,923,248
  5. Step 5: Solve for x
    x = 84,449,179,984,923,248/287,593,515.20
  6. Step 6: Final answer
    x = 293,640,765.60

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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.