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Finding the Fourth Proportional to 618,275.29, 853,228.73 and 360,145.50

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Solution

The fourth proportional to 618,275.29, 853,228.73 and 360,145.50 is: 497,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,275.29 : 853,228.73 = 360,145.50 : x
  2. Step 2: Convert to fraction form
    618,275.29/853,228.73 = 360,145.50/x
  3. Step 3: Cross multiply
    618,275.29x = 853,228.73 × 360,145.50
  4. Step 4: Simplify right side
    618,275.29x = 307,286,485,148.40
  5. Step 5: Solve for x
    x = 307,286,485,148.40/618,275.29
  6. Step 6: Final answer
    x = 497,005.93

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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.