Home / 921,130.20-1,271,108.97-507,585.54

Finding the Fourth Proportional to 921,130.20, 1,271,108.97 and 507,585.54

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Solution

The fourth proportional to 921,130.20, 1,271,108.97 and 507,585.54 is: 700,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,130.20 : 1,271,108.97 = 507,585.54 : x
  2. Step 2: Convert to fraction form
    921,130.20/1,271,108.97 = 507,585.54/x
  3. Step 3: Cross multiply
    921,130.20x = 1,271,108.97 × 507,585.54
  4. Step 4: Simplify right side
    921,130.20x = 645,196,532,936.29
  5. Step 5: Solve for x
    x = 645,196,532,936.29/921,130.20
  6. Step 6: Final answer
    x = 700,440.10

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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.