Home / 1,287,466.68-1,931,214.61-388,915.86

Finding the Fourth Proportional to 1,287,466.68, 1,931,214.61 and 388,915.86

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Solution

The fourth proportional to 1,287,466.68, 1,931,214.61 and 388,915.86 is: 583,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,466.68 : 1,931,214.61 = 388,915.86 : x
  2. Step 2: Convert to fraction form
    1,287,466.68/1,931,214.61 = 388,915.86/x
  3. Step 3: Cross multiply
    1,287,466.68x = 1,931,214.61 × 388,915.86
  4. Step 4: Simplify right side
    1,287,466.68x = 751,079,996,433.26
  5. Step 5: Solve for x
    x = 751,079,996,433.26/1,287,466.68
  6. Step 6: Final answer
    x = 583,378.20

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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.