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Finding the Fourth Proportional to 509,341.05, 763,421.03 and 479,816.55

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Solution

The fourth proportional to 509,341.05, 763,421.03 and 479,816.55 is: 719,168.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,341.05 : 763,421.03 = 479,816.55 : x
  2. Step 2: Convert to fraction form
    509,341.05/763,421.03 = 479,816.55/x
  3. Step 3: Cross multiply
    509,341.05x = 763,421.03 × 479,816.55
  4. Step 4: Simplify right side
    509,341.05x = 366,302,044,812.05
  5. Step 5: Solve for x
    x = 366,302,044,812.05/509,341.05
  6. Step 6: Final answer
    x = 719,168.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.