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Finding the Fourth Proportional to 977,368.90, 1,465,362.15 and 445,144.90

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Solution

The fourth proportional to 977,368.90, 1,465,362.15 and 445,144.90 is: 667,402.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,368.90 : 1,465,362.15 = 445,144.90 : x
  2. Step 2: Convert to fraction form
    977,368.90/1,465,362.15 = 445,144.90/x
  3. Step 3: Cross multiply
    977,368.90x = 1,465,362.15 × 445,144.90
  4. Step 4: Simplify right side
    977,368.90x = 652,298,487,725.54
  5. Step 5: Solve for x
    x = 652,298,487,725.54/977,368.90
  6. Step 6: Final answer
    x = 667,402.54

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1.5x scale

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.