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Finding the Fourth Proportional to 522,113.61, 720,502.79 and 307,266.33

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Solution

The fourth proportional to 522,113.61, 720,502.79 and 307,266.33 is: 424,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,113.61 : 720,502.79 = 307,266.33 : x
  2. Step 2: Convert to fraction form
    522,113.61/720,502.79 = 307,266.33/x
  3. Step 3: Cross multiply
    522,113.61x = 720,502.79 × 307,266.33
  4. Step 4: Simplify right side
    522,113.61x = 221,386,246,501.73
  5. Step 5: Solve for x
    x = 221,386,246,501.73/522,113.61
  6. Step 6: Final answer
    x = 424,019.30

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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.