Home / 921,285.30-1,271,378.76-534,330.06

Finding the Fourth Proportional to 921,285.30, 1,271,378.76 and 534,330.06

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Solution

The fourth proportional to 921,285.30, 1,271,378.76 and 534,330.06 is: 737,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,285.30 : 1,271,378.76 = 534,330.06 : x
  2. Step 2: Convert to fraction form
    921,285.30/1,271,378.76 = 534,330.06/x
  3. Step 3: Cross multiply
    921,285.30x = 1,271,378.76 × 534,330.06
  4. Step 4: Simplify right side
    921,285.30x = 679,335,889,113.53
  5. Step 5: Solve for x
    x = 679,335,889,113.53/921,285.30
  6. Step 6: Final answer
    x = 737,378.41

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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.