Home / 691,775.48-1,037,787.98-312,875.30

Finding the Fourth Proportional to 691,775.48, 1,037,787.98 and 312,875.30

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Solution

The fourth proportional to 691,775.48, 1,037,787.98 and 312,875.30 is: 469,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,775.48 : 1,037,787.98 = 312,875.30 : x
  2. Step 2: Convert to fraction form
    691,775.48/1,037,787.98 = 312,875.30/x
  3. Step 3: Cross multiply
    691,775.48x = 1,037,787.98 × 312,875.30
  4. Step 4: Simplify right side
    691,775.48x = 324,698,226,608.99
  5. Step 5: Solve for x
    x = 324,698,226,608.99/691,775.48
  6. Step 6: Final answer
    x = 469,369.38

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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.