Home / 912,885.32-1,369,452.56-380,281.79

Finding the Fourth Proportional to 912,885.32, 1,369,452.56 and 380,281.79

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Solution

The fourth proportional to 912,885.32, 1,369,452.56 and 380,281.79 is: 570,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,885.32 : 1,369,452.56 = 380,281.79 : x
  2. Step 2: Convert to fraction form
    912,885.32/1,369,452.56 = 380,281.79/x
  3. Step 3: Cross multiply
    912,885.32x = 1,369,452.56 × 380,281.79
  4. Step 4: Simplify right side
    912,885.32x = 520,777,870,836.88
  5. Step 5: Solve for x
    x = 520,777,870,836.88/912,885.32
  6. Step 6: Final answer
    x = 570,474.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.