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Finding the Fourth Proportional to 528,639.60, 793,082.52 and 154,691.76

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Solution

The fourth proportional to 528,639.60, 793,082.52 and 154,691.76 is: 232,073.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,639.60 : 793,082.52 = 154,691.76 : x
  2. Step 2: Convert to fraction form
    528,639.60/793,082.52 = 154,691.76/x
  3. Step 3: Cross multiply
    528,639.60x = 793,082.52 × 154,691.76
  4. Step 4: Simplify right side
    528,639.60x = 122,683,330,844.04
  5. Step 5: Solve for x
    x = 122,683,330,844.04/528,639.60
  6. Step 6: Final answer
    x = 232,073.67

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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.