Home / 920,879.19-1,270,851.56-512,980.91

Finding the Fourth Proportional to 920,879.19, 1,270,851.56 and 512,980.91

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Solution

The fourth proportional to 920,879.19, 1,270,851.56 and 512,980.91 is: 707,934.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,879.19 : 1,270,851.56 = 512,980.91 : x
  2. Step 2: Convert to fraction form
    920,879.19/1,270,851.56 = 512,980.91/x
  3. Step 3: Cross multiply
    920,879.19x = 1,270,851.56 × 512,980.91
  4. Step 4: Simplify right side
    920,879.19x = 651,922,587,493.93
  5. Step 5: Solve for x
    x = 651,922,587,493.93/920,879.19
  6. Step 6: Final answer
    x = 707,934.98

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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.