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Finding the Fourth Proportional to 480,307.86, 662,395.75 and 398,506.59

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Solution

The fourth proportional to 480,307.86, 662,395.75 and 398,506.59 is: 549,583.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,307.86 : 662,395.75 = 398,506.59 : x
  2. Step 2: Convert to fraction form
    480,307.86/662,395.75 = 398,506.59/x
  3. Step 3: Cross multiply
    480,307.86x = 662,395.75 × 398,506.59
  4. Step 4: Simplify right side
    480,307.86x = 263,969,070,566.73
  5. Step 5: Solve for x
    x = 263,969,070,566.73/480,307.86
  6. Step 6: Final answer
    x = 549,583.07

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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.