Home / 921,346.31-1,271,440.64-513,439.18

Finding the Fourth Proportional to 921,346.31, 1,271,440.64 and 513,439.18

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Solution

The fourth proportional to 921,346.31, 1,271,440.64 and 513,439.18 is: 708,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,346.31 : 1,271,440.64 = 513,439.18 : x
  2. Step 2: Convert to fraction form
    921,346.31/1,271,440.64 = 513,439.18/x
  3. Step 3: Cross multiply
    921,346.31x = 1,271,440.64 × 513,439.18
  4. Step 4: Simplify right side
    921,346.31x = 652,807,430,695.88
  5. Step 5: Solve for x
    x = 652,807,430,695.88/921,346.31
  6. Step 6: Final answer
    x = 708,536.44

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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.