Home / 851,860.80-1,175,731.20-512,438.40

Finding the Fourth Proportional to 851,860.80, 1,175,731.20 and 512,438.40

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Solution

The fourth proportional to 851,860.80, 1,175,731.20 and 512,438.40 is: 707,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,860.80 : 1,175,731.20 = 512,438.40 : x
  2. Step 2: Convert to fraction form
    851,860.80/1,175,731.20 = 512,438.40/x
  3. Step 3: Cross multiply
    851,860.80x = 1,175,731.20 × 512,438.40
  4. Step 4: Simplify right side
    851,860.80x = 602,489,814,958.08
  5. Step 5: Solve for x
    x = 602,489,814,958.08/851,860.80
  6. Step 6: Final answer
    x = 707,263.22

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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.