Home / 1,077,145.45-1,615,955.10-319,046.20

Finding the Fourth Proportional to 1,077,145.45, 1,615,955.10 and 319,046.20

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Solution

The fourth proportional to 1,077,145.45, 1,615,955.10 and 319,046.20 is: 478,639.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,145.45 : 1,615,955.10 = 319,046.20 : x
  2. Step 2: Convert to fraction form
    1,077,145.45/1,615,955.10 = 319,046.20/x
  3. Step 3: Cross multiply
    1,077,145.45x = 1,615,955.10 × 319,046.20
  4. Step 4: Simplify right side
    1,077,145.45x = 515,564,334,025.62
  5. Step 5: Solve for x
    x = 515,564,334,025.62/1,077,145.45
  6. Step 6: Final answer
    x = 478,639.48

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1.5x scale

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.