Home / 820,130.49-1,131,780.77-457,554.42

Finding the Fourth Proportional to 820,130.49, 1,131,780.77 and 457,554.42

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Solution

The fourth proportional to 820,130.49, 1,131,780.77 and 457,554.42 is: 631,425.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,130.49 : 1,131,780.77 = 457,554.42 : x
  2. Step 2: Convert to fraction form
    820,130.49/1,131,780.77 = 457,554.42/x
  3. Step 3: Cross multiply
    820,130.49x = 1,131,780.77 × 457,554.42
  4. Step 4: Simplify right side
    820,130.49x = 517,851,293,784.50
  5. Step 5: Solve for x
    x = 517,851,293,784.50/820,130.49
  6. Step 6: Final answer
    x = 631,425.49

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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.