Home / 691,907.40-1,037,861.10-665,335.35

Finding the Fourth Proportional to 691,907.40, 1,037,861.10 and 665,335.35

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Solution

The fourth proportional to 691,907.40, 1,037,861.10 and 665,335.35 is: 998,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,907.40 : 1,037,861.10 = 665,335.35 : x
  2. Step 2: Convert to fraction form
    691,907.40/1,037,861.10 = 665,335.35/x
  3. Step 3: Cross multiply
    691,907.40x = 1,037,861.10 × 665,335.35
  4. Step 4: Simplify right side
    691,907.40x = 690,525,678,219.89
  5. Step 5: Solve for x
    x = 690,525,678,219.89/691,907.40
  6. Step 6: Final answer
    x = 998,003.03

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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.