Home / 921,287.84-1,271,324.76-507,742.56

Finding the Fourth Proportional to 921,287.84, 1,271,324.76 and 507,742.56

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Solution

The fourth proportional to 921,287.84, 1,271,324.76 and 507,742.56 is: 700,655.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,287.84 : 1,271,324.76 = 507,742.56 : x
  2. Step 2: Convert to fraction form
    921,287.84/1,271,324.76 = 507,742.56/x
  3. Step 3: Cross multiply
    921,287.84x = 1,271,324.76 × 507,742.56
  4. Step 4: Simplify right side
    921,287.84x = 645,505,688,233.79
  5. Step 5: Solve for x
    x = 645,505,688,233.79/921,287.84
  6. Step 6: Final answer
    x = 700,655.82

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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.