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Finding the Fourth Proportional to 545,317.66, 752,343.59 and 315,749.62

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Solution

The fourth proportional to 545,317.66, 752,343.59 and 315,749.62 is: 435,621.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,317.66 : 752,343.59 = 315,749.62 : x
  2. Step 2: Convert to fraction form
    545,317.66/752,343.59 = 315,749.62/x
  3. Step 3: Cross multiply
    545,317.66x = 752,343.59 × 315,749.62
  4. Step 4: Simplify right side
    545,317.66x = 237,552,197,311.47
  5. Step 5: Solve for x
    x = 237,552,197,311.47/545,317.66
  6. Step 6: Final answer
    x = 435,621.69

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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.