Home / 483,336.61-666,916.59-279,312.76

Finding the Fourth Proportional to 483,336.61, 666,916.59 and 279,312.76

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Solution

The fourth proportional to 483,336.61, 666,916.59 and 279,312.76 is: 385,400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,336.61 : 666,916.59 = 279,312.76 : x
  2. Step 2: Convert to fraction form
    483,336.61/666,916.59 = 279,312.76/x
  3. Step 3: Cross multiply
    483,336.61x = 666,916.59 × 279,312.76
  4. Step 4: Simplify right side
    483,336.61x = 186,278,313,442.69
  5. Step 5: Solve for x
    x = 186,278,313,442.69/483,336.61
  6. Step 6: Final answer
    x = 385,400.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.