Home / 820,041.28-1,230,113.76-346,664.32

Finding the Fourth Proportional to 820,041.28, 1,230,113.76 and 346,664.32

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Solution

The fourth proportional to 820,041.28, 1,230,113.76 and 346,664.32 is: 520,018.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,041.28 : 1,230,113.76 = 346,664.32 : x
  2. Step 2: Convert to fraction form
    820,041.28/1,230,113.76 = 346,664.32/x
  3. Step 3: Cross multiply
    820,041.28x = 1,230,113.76 × 346,664.32
  4. Step 4: Simplify right side
    820,041.28x = 426,436,550,133.04
  5. Step 5: Solve for x
    x = 426,436,550,133.04/820,041.28
  6. Step 6: Final answer
    x = 520,018.39

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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.