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Finding the Fourth Proportional to 1,977,479.03, 2,966,218.55 and 912,205.91

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Solution

The fourth proportional to 1,977,479.03, 2,966,218.55 and 912,205.91 is: 1,368,308.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,479.03 : 2,966,218.55 = 912,205.91 : x
  2. Step 2: Convert to fraction form
    1,977,479.03/2,966,218.55 = 912,205.91/x
  3. Step 3: Cross multiply
    1,977,479.03x = 2,966,218.55 × 912,205.91
  4. Step 4: Simplify right side
    1,977,479.03x = 2,705,802,072,269.51
  5. Step 5: Solve for x
    x = 2,705,802,072,269.51/1,977,479.03
  6. Step 6: Final answer
    x = 1,368,308.86

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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.