Home / 859,780.73-1,289,671.07-385,912.50

Finding the Fourth Proportional to 859,780.73, 1,289,671.07 and 385,912.50

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Solution

The fourth proportional to 859,780.73, 1,289,671.07 and 385,912.50 is: 578,868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,780.73 : 1,289,671.07 = 385,912.50 : x
  2. Step 2: Convert to fraction form
    859,780.73/1,289,671.07 = 385,912.50/x
  3. Step 3: Cross multiply
    859,780.73x = 1,289,671.07 × 385,912.50
  4. Step 4: Simplify right side
    859,780.73x = 497,700,184,871.81
  5. Step 5: Solve for x
    x = 497,700,184,871.81/859,780.73
  6. Step 6: Final answer
    x = 578,868.74

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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.