Home / 653,611.10-977,406.79-621,724.64

Finding the Fourth Proportional to 653,611.10, 977,406.79 and 621,724.64

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Solution

The fourth proportional to 653,611.10, 977,406.79 and 621,724.64 is: 929,723.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,611.10 : 977,406.79 = 621,724.64 : x
  2. Step 2: Convert to fraction form
    653,611.10/977,406.79 = 621,724.64/x
  3. Step 3: Cross multiply
    653,611.10x = 977,406.79 × 621,724.64
  4. Step 4: Simplify right side
    653,611.10x = 607,677,887,089.82
  5. Step 5: Solve for x
    x = 607,677,887,089.82/653,611.10
  6. Step 6: Final answer
    x = 929,723.94

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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.