Home / 1,326,935.28-1,989,898.50-428,242.30

Finding the Fourth Proportional to 1,326,935.28, 1,989,898.50 and 428,242.30

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Solution

The fourth proportional to 1,326,935.28, 1,989,898.50 and 428,242.30 is: 642,200.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,935.28 : 1,989,898.50 = 428,242.30 : x
  2. Step 2: Convert to fraction form
    1,326,935.28/1,989,898.50 = 428,242.30/x
  3. Step 3: Cross multiply
    1,326,935.28x = 1,989,898.50 × 428,242.30
  4. Step 4: Simplify right side
    1,326,935.28x = 852,158,710,406.55
  5. Step 5: Solve for x
    x = 852,158,710,406.55/1,326,935.28
  6. Step 6: Final answer
    x = 642,200.66

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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.