Home / 920,879.40-1,270,851.84-512,981.13

Finding the Fourth Proportional to 920,879.40, 1,270,851.84 and 512,981.13

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Solution

The fourth proportional to 920,879.40, 1,270,851.84 and 512,981.13 is: 707,935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,879.40 : 1,270,851.84 = 512,981.13 : x
  2. Step 2: Convert to fraction form
    920,879.40/1,270,851.84 = 512,981.13/x
  3. Step 3: Cross multiply
    920,879.40x = 1,270,851.84 × 512,981.13
  4. Step 4: Simplify right side
    920,879.40x = 651,923,012,945.78
  5. Step 5: Solve for x
    x = 651,923,012,945.78/920,879.40
  6. Step 6: Final answer
    x = 707,935.28

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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.