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Finding the Fourth Proportional to 570,315.12, 787,025.34 and 315,660.84

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Solution

The fourth proportional to 570,315.12, 787,025.34 and 315,660.84 is: 435,606.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,315.12 : 787,025.34 = 315,660.84 : x
  2. Step 2: Convert to fraction form
    570,315.12/787,025.34 = 315,660.84/x
  3. Step 3: Cross multiply
    570,315.12x = 787,025.34 × 315,660.84
  4. Step 4: Simplify right side
    570,315.12x = 248,433,079,925.69
  5. Step 5: Solve for x
    x = 248,433,079,925.69/570,315.12
  6. Step 6: Final answer
    x = 435,606.69

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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.