Home / 708,555.90-977,784.39-386,260.86

Finding the Fourth Proportional to 708,555.90, 977,784.39 and 386,260.86

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Solution

The fourth proportional to 708,555.90, 977,784.39 and 386,260.86 is: 533,027.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,555.90 : 977,784.39 = 386,260.86 : x
  2. Step 2: Convert to fraction form
    708,555.90/977,784.39 = 386,260.86/x
  3. Step 3: Cross multiply
    708,555.90x = 977,784.39 × 386,260.86
  4. Step 4: Simplify right side
    708,555.90x = 377,679,839,375.98
  5. Step 5: Solve for x
    x = 377,679,839,375.98/708,555.90
  6. Step 6: Final answer
    x = 533,027.58

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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.