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Finding the Fourth Proportional to 493,347.40, 691,386.20 and 493,347.40

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Solution

The fourth proportional to 493,347.40, 691,386.20 and 493,347.40 is: 691,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,347.40 : 691,386.20 = 493,347.40 : x
  2. Step 2: Convert to fraction form
    493,347.40/691,386.20 = 493,347.40/x
  3. Step 3: Cross multiply
    493,347.40x = 691,386.20 × 493,347.40
  4. Step 4: Simplify right side
    493,347.40x = 341,093,584,165.88
  5. Step 5: Solve for x
    x = 341,093,584,165.88/493,347.40
  6. Step 6: Final answer
    x = 691,386.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.