Home / 781,423.02-1,172,344.94-402,137.07

Finding the Fourth Proportional to 781,423.02, 1,172,344.94 and 402,137.07

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Solution

The fourth proportional to 781,423.02, 1,172,344.94 and 402,137.07 is: 603,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,423.02 : 1,172,344.94 = 402,137.07 : x
  2. Step 2: Convert to fraction form
    781,423.02/1,172,344.94 = 402,137.07/x
  3. Step 3: Cross multiply
    781,423.02x = 1,172,344.94 × 402,137.07
  4. Step 4: Simplify right side
    781,423.02x = 471,443,363,086.56
  5. Step 5: Solve for x
    x = 471,443,363,086.56/781,423.02
  6. Step 6: Final answer
    x = 603,313.89

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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.