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Finding the Fourth Proportional to 977,117.90, 1,465,676.85 and 819,653.90

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Solution

The fourth proportional to 977,117.90, 1,465,676.85 and 819,653.90 is: 1,229,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,117.90 : 1,465,676.85 = 819,653.90 : x
  2. Step 2: Convert to fraction form
    977,117.90/1,465,676.85 = 819,653.90/x
  3. Step 3: Cross multiply
    977,117.90x = 1,465,676.85 × 819,653.90
  4. Step 4: Simplify right side
    977,117.90x = 1,201,347,746,242.22
  5. Step 5: Solve for x
    x = 1,201,347,746,242.22/977,117.90
  6. Step 6: Final answer
    x = 1,229,480.85

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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.