Home / 859,478.04-1,288,852.56-409,678.56

Finding the Fourth Proportional to 859,478.04, 1,288,852.56 and 409,678.56

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Solution

The fourth proportional to 859,478.04, 1,288,852.56 and 409,678.56 is: 614,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,478.04 : 1,288,852.56 = 409,678.56 : x
  2. Step 2: Convert to fraction form
    859,478.04/1,288,852.56 = 409,678.56/x
  3. Step 3: Cross multiply
    859,478.04x = 1,288,852.56 × 409,678.56
  4. Step 4: Simplify right side
    859,478.04x = 528,015,260,833.11
  5. Step 5: Solve for x
    x = 528,015,260,833.11/859,478.04
  6. Step 6: Final answer
    x = 614,344.10

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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.