Home / 758,938.40-1,139,177.92-380,130.56

Finding the Fourth Proportional to 758,938.40, 1,139,177.92 and 380,130.56

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Solution

The fourth proportional to 758,938.40, 1,139,177.92 and 380,130.56 is: 570,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,938.40 : 1,139,177.92 = 380,130.56 : x
  2. Step 2: Convert to fraction form
    758,938.40/1,139,177.92 = 380,130.56/x
  3. Step 3: Cross multiply
    758,938.40x = 1,139,177.92 × 380,130.56
  4. Step 4: Simplify right side
    758,938.40x = 433,036,340,669.24
  5. Step 5: Solve for x
    x = 433,036,340,669.24/758,938.40
  6. Step 6: Final answer
    x = 570,581.67

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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.