Home / 687,832.31-1,031,205.79-434,579.07

Finding the Fourth Proportional to 687,832.31, 1,031,205.79 and 434,579.07

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Solution

The fourth proportional to 687,832.31, 1,031,205.79 and 434,579.07 is: 651,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,832.31 : 1,031,205.79 = 434,579.07 : x
  2. Step 2: Convert to fraction form
    687,832.31/1,031,205.79 = 434,579.07/x
  3. Step 3: Cross multiply
    687,832.31x = 1,031,205.79 × 434,579.07
  4. Step 4: Simplify right side
    687,832.31x = 448,140,455,162.55
  5. Step 5: Solve for x
    x = 448,140,455,162.55/687,832.31
  6. Step 6: Final answer
    x = 651,525.74

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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.