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Finding the Fourth Proportional to 570,523.32, 787,334.40 and 312,411.24

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Solution

The fourth proportional to 570,523.32, 787,334.40 and 312,411.24 is: 431,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,523.32 : 787,334.40 = 312,411.24 : x
  2. Step 2: Convert to fraction form
    570,523.32/787,334.40 = 312,411.24/x
  3. Step 3: Cross multiply
    570,523.32x = 787,334.40 × 312,411.24
  4. Step 4: Simplify right side
    570,523.32x = 245,972,116,198.66
  5. Step 5: Solve for x
    x = 245,972,116,198.66/570,523.32
  6. Step 6: Final answer
    x = 431,134.20

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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.