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Finding the Fourth Proportional to 622,087.61, 858,426.14 and 346,424.63

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Solution

The fourth proportional to 622,087.61, 858,426.14 and 346,424.63 is: 478,035.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,087.61 : 858,426.14 = 346,424.63 : x
  2. Step 2: Convert to fraction form
    622,087.61/858,426.14 = 346,424.63/x
  3. Step 3: Cross multiply
    622,087.61x = 858,426.14 × 346,424.63
  4. Step 4: Simplify right side
    622,087.61x = 297,379,958,345.77
  5. Step 5: Solve for x
    x = 297,379,958,345.77/622,087.61
  6. Step 6: Final answer
    x = 478,035.50

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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.