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Finding the Fourth Proportional to 710,530.47, 980,532.32 and 383,843.61

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Solution

The fourth proportional to 710,530.47, 980,532.32 and 383,843.61 is: 529,704.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,530.47 : 980,532.32 = 383,843.61 : x
  2. Step 2: Convert to fraction form
    710,530.47/980,532.32 = 383,843.61/x
  3. Step 3: Cross multiply
    710,530.47x = 980,532.32 × 383,843.61
  4. Step 4: Simplify right side
    710,530.47x = 376,371,063,511.26
  5. Step 5: Solve for x
    x = 376,371,063,511.26/710,530.47
  6. Step 6: Final answer
    x = 529,704.33

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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.