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Finding the Fourth Proportional to 522,308.51, 720,935.19 and 307,573.13

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Solution

The fourth proportional to 522,308.51, 720,935.19 and 307,573.13 is: 424,538.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,308.51 : 720,935.19 = 307,573.13 : x
  2. Step 2: Convert to fraction form
    522,308.51/720,935.19 = 307,573.13/x
  3. Step 3: Cross multiply
    522,308.51x = 720,935.19 × 307,573.13
  4. Step 4: Simplify right side
    522,308.51x = 221,740,289,310.77
  5. Step 5: Solve for x
    x = 221,740,289,310.77/522,308.51
  6. Step 6: Final answer
    x = 424,538.92

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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.