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Finding the Fourth Proportional to 497,352.40, 746,806.20 and 287,400.40

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Solution

The fourth proportional to 497,352.40, 746,806.20 and 287,400.40 is: 431,549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,352.40 : 746,806.20 = 287,400.40 : x
  2. Step 2: Convert to fraction form
    497,352.40/746,806.20 = 287,400.40/x
  3. Step 3: Cross multiply
    497,352.40x = 746,806.20 × 287,400.40
  4. Step 4: Simplify right side
    497,352.40x = 214,632,400,602.48
  5. Step 5: Solve for x
    x = 214,632,400,602.48/497,352.40
  6. Step 6: Final answer
    x = 431,549.94

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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.