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Finding the Fourth Proportional to 602,220.99, 828,978.78 and 520,511.70

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Solution

The fourth proportional to 602,220.99, 828,978.78 and 520,511.70 is: 716,503.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,220.99 : 828,978.78 = 520,511.70 : x
  2. Step 2: Convert to fraction form
    602,220.99/828,978.78 = 520,511.70/x
  3. Step 3: Cross multiply
    602,220.99x = 828,978.78 × 520,511.70
  4. Step 4: Simplify right side
    602,220.99x = 431,493,154,041.73
  5. Step 5: Solve for x
    x = 431,493,154,041.73/602,220.99
  6. Step 6: Final answer
    x = 716,503.01

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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.