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Finding the Fourth Proportional to 608,830.68, 839,818.98 and 402,100.32

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Solution

The fourth proportional to 608,830.68, 839,818.98 and 402,100.32 is: 554,655.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,830.68 : 839,818.98 = 402,100.32 : x
  2. Step 2: Convert to fraction form
    608,830.68/839,818.98 = 402,100.32/x
  3. Step 3: Cross multiply
    608,830.68x = 839,818.98 × 402,100.32
  4. Step 4: Simplify right side
    608,830.68x = 337,691,480,600.07
  5. Step 5: Solve for x
    x = 337,691,480,600.07/608,830.68
  6. Step 6: Final answer
    x = 554,655.82

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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.