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Finding the Fourth Proportional to 522,267.51, 720,674.91 and 307,394.76

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Solution

The fourth proportional to 522,267.51, 720,674.91 and 307,394.76 is: 424,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,267.51 : 720,674.91 = 307,394.76 : x
  2. Step 2: Convert to fraction form
    522,267.51/720,674.91 = 307,394.76/x
  3. Step 3: Cross multiply
    522,267.51x = 720,674.91 × 307,394.76
  4. Step 4: Simplify right side
    522,267.51x = 221,531,690,997.47
  5. Step 5: Solve for x
    x = 221,531,690,997.47/522,267.51
  6. Step 6: Final answer
    x = 424,172.84

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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.