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Finding the Fourth Proportional to 783,283, 1,080,931.62 and 443,774.20

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Solution

The fourth proportional to 783,283, 1,080,931.62 and 443,774.20 is: 612,409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,283 : 1,080,931.62 = 443,774.20 : x
  2. Step 2: Convert to fraction form
    783,283/1,080,931.62 = 443,774.20/x
  3. Step 3: Cross multiply
    783,283x = 1,080,931.62 × 443,774.20
  4. Step 4: Simplify right side
    783,283x = 479,689,564,920.20
  5. Step 5: Solve for x
    x = 479,689,564,920.20/783,283
  6. Step 6: Final answer
    x = 612,409.01

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1.5x scale

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.