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Finding the Fourth Proportional to 661,941, 913,478.58 and 360,137.16

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Solution

The fourth proportional to 661,941, 913,478.58 and 360,137.16 is: 496,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,941 : 913,478.58 = 360,137.16 : x
  2. Step 2: Convert to fraction form
    661,941/913,478.58 = 360,137.16/x
  3. Step 3: Cross multiply
    661,941x = 913,478.58 × 360,137.16
  4. Step 4: Simplify right side
    661,941x = 328,977,581,522.03
  5. Step 5: Solve for x
    x = 328,977,581,522.03/661,941
  6. Step 6: Final answer
    x = 496,989.28

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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.