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Finding the Fourth Proportional to 994,547.20, 1,491,820.80 and 859,244.80

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Solution

The fourth proportional to 994,547.20, 1,491,820.80 and 859,244.80 is: 1,288,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,547.20 : 1,491,820.80 = 859,244.80 : x
  2. Step 2: Convert to fraction form
    994,547.20/1,491,820.80 = 859,244.80/x
  3. Step 3: Cross multiply
    994,547.20x = 1,491,820.80 × 859,244.80
  4. Step 4: Simplify right side
    994,547.20x = 1,281,839,264,931.84
  5. Step 5: Solve for x
    x = 1,281,839,264,931.84/994,547.20
  6. Step 6: Final answer
    x = 1,288,867.20

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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.