Home / 920,128.23-1,376,348.02-646,555.28

Finding the Fourth Proportional to 920,128.23, 1,376,348.02 and 646,555.28

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Solution

The fourth proportional to 920,128.23, 1,376,348.02 and 646,555.28 is: 967,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,128.23 : 1,376,348.02 = 646,555.28 : x
  2. Step 2: Convert to fraction form
    920,128.23/1,376,348.02 = 646,555.28/x
  3. Step 3: Cross multiply
    920,128.23x = 1,376,348.02 × 646,555.28
  4. Step 4: Simplify right side
    920,128.23x = 889,885,070,950.42
  5. Step 5: Solve for x
    x = 889,885,070,950.42/920,128.23
  6. Step 6: Final answer
    x = 967,131.58

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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.