Home / 877,315.56-1,316,459.94-428,040.12

Finding the Fourth Proportional to 877,315.56, 1,316,459.94 and 428,040.12

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Solution

The fourth proportional to 877,315.56, 1,316,459.94 and 428,040.12 is: 642,297.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,315.56 : 1,316,459.94 = 428,040.12 : x
  2. Step 2: Convert to fraction form
    877,315.56/1,316,459.94 = 428,040.12/x
  3. Step 3: Cross multiply
    877,315.56x = 1,316,459.94 × 428,040.12
  4. Step 4: Simplify right side
    877,315.56x = 563,497,670,692.79
  5. Step 5: Solve for x
    x = 563,497,670,692.79/877,315.56
  6. Step 6: Final answer
    x = 642,297.59

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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.