Home / 758,931.40-1,139,167.41-380,123.56

Finding the Fourth Proportional to 758,931.40, 1,139,167.41 and 380,123.56

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Solution

The fourth proportional to 758,931.40, 1,139,167.41 and 380,123.56 is: 570,571.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,931.40 : 1,139,167.41 = 380,123.56 : x
  2. Step 2: Convert to fraction form
    758,931.40/1,139,167.41 = 380,123.56/x
  3. Step 3: Cross multiply
    758,931.40x = 1,139,167.41 × 380,123.56
  4. Step 4: Simplify right side
    758,931.40x = 433,024,371,325.18
  5. Step 5: Solve for x
    x = 433,024,371,325.18/758,931.40
  6. Step 6: Final answer
    x = 570,571.16

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Double scale
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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.