Home / 921,336.85-1,271,446.07-513,429.74

Finding the Fourth Proportional to 921,336.85, 1,271,446.07 and 513,429.74

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Solution

The fourth proportional to 921,336.85, 1,271,446.07 and 513,429.74 is: 708,533.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,336.85 : 1,271,446.07 = 513,429.74 : x
  2. Step 2: Convert to fraction form
    921,336.85/1,271,446.07 = 513,429.74/x
  3. Step 3: Cross multiply
    921,336.85x = 1,271,446.07 × 513,429.74
  4. Step 4: Simplify right side
    921,336.85x = 652,798,220,987.67
  5. Step 5: Solve for x
    x = 652,798,220,987.67/921,336.85
  6. Step 6: Final answer
    x = 708,533.71

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Double scale
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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.