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Finding the Fourth Proportional to 648,428.67, 972,689.64 and 249,069.45

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Solution

The fourth proportional to 648,428.67, 972,689.64 and 249,069.45 is: 373,622.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,428.67 : 972,689.64 = 249,069.45 : x
  2. Step 2: Convert to fraction form
    648,428.67/972,689.64 = 249,069.45/x
  3. Step 3: Cross multiply
    648,428.67x = 972,689.64 × 249,069.45
  4. Step 4: Simplify right side
    648,428.67x = 242,267,273,655.50
  5. Step 5: Solve for x
    x = 242,267,273,655.50/648,428.67
  6. Step 6: Final answer
    x = 373,622.09

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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.