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Finding the Fourth Proportional to 586,429.90, 878,608.05 and 520,074.70

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Solution

The fourth proportional to 586,429.90, 878,608.05 and 520,074.70 is: 779,192.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,429.90 : 878,608.05 = 520,074.70 : x
  2. Step 2: Convert to fraction form
    586,429.90/878,608.05 = 520,074.70/x
  3. Step 3: Cross multiply
    586,429.90x = 878,608.05 × 520,074.70
  4. Step 4: Simplify right side
    586,429.90x = 456,941,818,021.34
  5. Step 5: Solve for x
    x = 456,941,818,021.34/586,429.90
  6. Step 6: Final answer
    x = 779,192.57

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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.