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Finding the Fourth Proportional to 977,606.70, 1,466,410.05 and 660,345.90

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Solution

The fourth proportional to 977,606.70, 1,466,410.05 and 660,345.90 is: 990,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,606.70 : 1,466,410.05 = 660,345.90 : x
  2. Step 2: Convert to fraction form
    977,606.70/1,466,410.05 = 660,345.90/x
  3. Step 3: Cross multiply
    977,606.70x = 1,466,410.05 × 660,345.90
  4. Step 4: Simplify right side
    977,606.70x = 968,337,864,236.30
  5. Step 5: Solve for x
    x = 968,337,864,236.30/977,606.70
  6. Step 6: Final answer
    x = 990,518.85

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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.