Home / 859,781.73-1,289,672.56-385,913.50

Finding the Fourth Proportional to 859,781.73, 1,289,672.56 and 385,913.50

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Solution

The fourth proportional to 859,781.73, 1,289,672.56 and 385,913.50 is: 578,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,781.73 : 1,289,672.56 = 385,913.50 : x
  2. Step 2: Convert to fraction form
    859,781.73/1,289,672.56 = 385,913.50/x
  3. Step 3: Cross multiply
    859,781.73x = 1,289,672.56 × 385,913.50
  4. Step 4: Simplify right side
    859,781.73x = 497,702,051,483.56
  5. Step 5: Solve for x
    x = 497,702,051,483.56/859,781.73
  6. Step 6: Final answer
    x = 578,870.23

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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.