Home / 781,390.50-1,078,325.40-423,694.50

Finding the Fourth Proportional to 781,390.50, 1,078,325.40 and 423,694.50

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Solution

The fourth proportional to 781,390.50, 1,078,325.40 and 423,694.50 is: 584,701.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,390.50 : 1,078,325.40 = 423,694.50 : x
  2. Step 2: Convert to fraction form
    781,390.50/1,078,325.40 = 423,694.50/x
  3. Step 3: Cross multiply
    781,390.50x = 1,078,325.40 × 423,694.50
  4. Step 4: Simplify right side
    781,390.50x = 456,880,541,190.30
  5. Step 5: Solve for x
    x = 456,880,541,190.30/781,390.50
  6. Step 6: Final answer
    x = 584,701.94

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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.