Home / 920,072.17-1,269,610.55-678,484.81

Finding the Fourth Proportional to 920,072.17, 1,269,610.55 and 678,484.81

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Solution

The fourth proportional to 920,072.17, 1,269,610.55 and 678,484.81 is: 936,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,072.17 : 1,269,610.55 = 678,484.81 : x
  2. Step 2: Convert to fraction form
    920,072.17/1,269,610.55 = 678,484.81/x
  3. Step 3: Cross multiply
    920,072.17x = 1,269,610.55 × 678,484.81
  4. Step 4: Simplify right side
    920,072.17x = 861,411,466,442.69
  5. Step 5: Solve for x
    x = 861,411,466,442.69/920,072.17
  6. Step 6: Final answer
    x = 936,243.37

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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.