Home / 877,412.71-1,316,605.44-428,137.30

Finding the Fourth Proportional to 877,412.71, 1,316,605.44 and 428,137.30

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Solution

The fourth proportional to 877,412.71, 1,316,605.44 and 428,137.30 is: 642,443.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,412.71 : 1,316,605.44 = 428,137.30 : x
  2. Step 2: Convert to fraction form
    877,412.71/1,316,605.44 = 428,137.30/x
  3. Step 3: Cross multiply
    877,412.71x = 1,316,605.44 × 428,137.30
  4. Step 4: Simplify right side
    877,412.71x = 563,687,891,684.01
  5. Step 5: Solve for x
    x = 563,687,891,684.01/877,412.71
  6. Step 6: Final answer
    x = 642,443.27

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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.