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Finding the Fourth Proportional to 522,340.71, 720,979.64 and 307,605.33

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Solution

The fourth proportional to 522,340.71, 720,979.64 and 307,605.33 is: 424,583.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,340.71 : 720,979.64 = 307,605.33 : x
  2. Step 2: Convert to fraction form
    522,340.71/720,979.64 = 307,605.33/x
  3. Step 3: Cross multiply
    522,340.71x = 720,979.64 × 307,605.33
  4. Step 4: Simplify right side
    522,340.71x = 221,777,178,547.46
  5. Step 5: Solve for x
    x = 221,777,178,547.46/522,340.71
  6. Step 6: Final answer
    x = 424,583.37

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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.