Home / 1,139,290.64-1,709,052.96-429,915.68

Finding the Fourth Proportional to 1,139,290.64, 1,709,052.96 and 429,915.68

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Solution

The fourth proportional to 1,139,290.64, 1,709,052.96 and 429,915.68 is: 644,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,290.64 : 1,709,052.96 = 429,915.68 : x
  2. Step 2: Convert to fraction form
    1,139,290.64/1,709,052.96 = 429,915.68/x
  3. Step 3: Cross multiply
    1,139,290.64x = 1,709,052.96 × 429,915.68
  4. Step 4: Simplify right side
    1,139,290.64x = 734,748,665,454.41
  5. Step 5: Solve for x
    x = 734,748,665,454.41/1,139,290.64
  6. Step 6: Final answer
    x = 644,917.67

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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.