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Finding the Fourth Proportional to 539,065.45, 743,915.51 and 297,358.21

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Solution

The fourth proportional to 539,065.45, 743,915.51 and 297,358.21 is: 410,357.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,065.45 : 743,915.51 = 297,358.21 : x
  2. Step 2: Convert to fraction form
    539,065.45/743,915.51 = 297,358.21/x
  3. Step 3: Cross multiply
    539,065.45x = 743,915.51 × 297,358.21
  4. Step 4: Simplify right side
    539,065.45x = 221,209,384,444.84
  5. Step 5: Solve for x
    x = 221,209,384,444.84/539,065.45
  6. Step 6: Final answer
    x = 410,357.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.