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Finding the Fourth Proportional to 637,235.71, 879,406.81 and 346,857.83

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Solution

The fourth proportional to 637,235.71, 879,406.81 and 346,857.83 is: 478,675.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,235.71 : 879,406.81 = 346,857.83 : x
  2. Step 2: Convert to fraction form
    637,235.71/879,406.81 = 346,857.83/x
  3. Step 3: Cross multiply
    637,235.71x = 879,406.81 × 346,857.83
  4. Step 4: Simplify right side
    637,235.71x = 305,029,135,837.42
  5. Step 5: Solve for x
    x = 305,029,135,837.42/637,235.71
  6. Step 6: Final answer
    x = 478,675.52

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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.