Home / 563,043.09-776,990.71-321,319.45

Finding the Fourth Proportional to 563,043.09, 776,990.71 and 321,319.45

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Solution

The fourth proportional to 563,043.09, 776,990.71 and 321,319.45 is: 443,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,043.09 : 776,990.71 = 321,319.45 : x
  2. Step 2: Convert to fraction form
    563,043.09/776,990.71 = 321,319.45/x
  3. Step 3: Cross multiply
    563,043.09x = 776,990.71 × 321,319.45
  4. Step 4: Simplify right side
    563,043.09x = 249,662,227,592.31
  5. Step 5: Solve for x
    x = 249,662,227,592.31/563,043.09
  6. Step 6: Final answer
    x = 443,415.85

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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.