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Finding the Fourth Proportional to 977,117.70, 1,465,676.55 and 819,653.70

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Solution

The fourth proportional to 977,117.70, 1,465,676.55 and 819,653.70 is: 1,229,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,117.70 : 1,465,676.55 = 819,653.70 : x
  2. Step 2: Convert to fraction form
    977,117.70/1,465,676.55 = 819,653.70/x
  3. Step 3: Cross multiply
    977,117.70x = 1,465,676.55 × 819,653.70
  4. Step 4: Simplify right side
    977,117.70x = 1,201,347,207,210.73
  5. Step 5: Solve for x
    x = 1,201,347,207,210.73/977,117.70
  6. Step 6: Final answer
    x = 1,229,480.55

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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.