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Finding the Fourth Proportional to 620,402.40, 930,603.60 and 462,938.40

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Solution

The fourth proportional to 620,402.40, 930,603.60 and 462,938.40 is: 694,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,402.40 : 930,603.60 = 462,938.40 : x
  2. Step 2: Convert to fraction form
    620,402.40/930,603.60 = 462,938.40/x
  3. Step 3: Cross multiply
    620,402.40x = 930,603.60 × 462,938.40
  4. Step 4: Simplify right side
    620,402.40x = 430,812,141,618.24
  5. Step 5: Solve for x
    x = 430,812,141,618.24/620,402.40
  6. Step 6: Final answer
    x = 694,407.60

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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.