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Finding the Fourth Proportional to 480,315.61, 662,741.35 and 289,339.48

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Solution

The fourth proportional to 480,315.61, 662,741.35 and 289,339.48 is: 399,231.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,315.61 : 662,741.35 = 289,339.48 : x
  2. Step 2: Convert to fraction form
    480,315.61/662,741.35 = 289,339.48/x
  3. Step 3: Cross multiply
    480,315.61x = 662,741.35 × 289,339.48
  4. Step 4: Simplify right side
    480,315.61x = 191,757,237,583.50
  5. Step 5: Solve for x
    x = 191,757,237,583.50/480,315.61
  6. Step 6: Final answer
    x = 399,231.74

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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.