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Finding the Fourth Proportional to 545,307.55, 752,410.35 and 315,782.24

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Solution

The fourth proportional to 545,307.55, 752,410.35 and 315,782.24 is: 435,713.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,307.55 : 752,410.35 = 315,782.24 : x
  2. Step 2: Convert to fraction form
    545,307.55/752,410.35 = 315,782.24/x
  3. Step 3: Cross multiply
    545,307.55x = 752,410.35 × 315,782.24
  4. Step 4: Simplify right side
    545,307.55x = 237,597,821,960.13
  5. Step 5: Solve for x
    x = 237,597,821,960.13/545,307.55
  6. Step 6: Final answer
    x = 435,713.43

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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.