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Finding the Fourth Proportional to 660,421.66, 911,404.43 and 370,045.37

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Solution

The fourth proportional to 660,421.66, 911,404.43 and 370,045.37 is: 510,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,421.66 : 911,404.43 = 370,045.37 : x
  2. Step 2: Convert to fraction form
    660,421.66/911,404.43 = 370,045.37/x
  3. Step 3: Cross multiply
    660,421.66x = 911,404.43 × 370,045.37
  4. Step 4: Simplify right side
    660,421.66x = 337,260,989,518.99
  5. Step 5: Solve for x
    x = 337,260,989,518.99/660,421.66
  6. Step 6: Final answer
    x = 510,675.24

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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.