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Finding the Fourth Proportional to 707,789.68, 977,398.86 and 449,751.67

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Solution

The fourth proportional to 707,789.68, 977,398.86 and 449,751.67 is: 621,069.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,789.68 : 977,398.86 = 449,751.67 : x
  2. Step 2: Convert to fraction form
    707,789.68/977,398.86 = 449,751.67/x
  3. Step 3: Cross multiply
    707,789.68x = 977,398.86 × 449,751.67
  4. Step 4: Simplify right side
    707,789.68x = 439,586,769,541.10
  5. Step 5: Solve for x
    x = 439,586,769,541.10/707,789.68
  6. Step 6: Final answer
    x = 621,069.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.