Home / 921,339.48-1,271,449.69-513,432.36

Finding the Fourth Proportional to 921,339.48, 1,271,449.69 and 513,432.36

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Solution

The fourth proportional to 921,339.48, 1,271,449.69 and 513,432.36 is: 708,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,339.48 : 1,271,449.69 = 513,432.36 : x
  2. Step 2: Convert to fraction form
    921,339.48/1,271,449.69 = 513,432.36/x
  3. Step 3: Cross multiply
    921,339.48x = 1,271,449.69 × 513,432.36
  4. Step 4: Simplify right side
    921,339.48x = 652,803,414,957.97
  5. Step 5: Solve for x
    x = 652,803,414,957.97/921,339.48
  6. Step 6: Final answer
    x = 708,537.33

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Double scale
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Similar ratio
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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.