Home / 485,275,717.40-727,913,576.10-399,111,416.60

Finding the Fourth Proportional to 485,275,717.40, 727,913,576.10 and 399,111,416.60

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Solution

The fourth proportional to 485,275,717.40, 727,913,576.10 and 399,111,416.60 is: 598,667,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,275,717.40 : 727,913,576.10 = 399,111,416.60 : x
  2. Step 2: Convert to fraction form
    485,275,717.40/727,913,576.10 = 399,111,416.60/x
  3. Step 3: Cross multiply
    485,275,717.40x = 727,913,576.10 × 399,111,416.60
  4. Step 4: Simplify right side
    485,275,717.40x = 290,518,618,519,642,944
  5. Step 5: Solve for x
    x = 290,518,618,519,642,944/485,275,717.40
  6. Step 6: Final answer
    x = 598,667,124.90

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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.