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Finding the Fourth Proportional to 637,092.79, 879,142.75 and 378,955.51

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Solution

The fourth proportional to 637,092.79, 879,142.75 and 378,955.51 is: 522,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,092.79 : 879,142.75 = 378,955.51 : x
  2. Step 2: Convert to fraction form
    637,092.79/879,142.75 = 378,955.51/x
  3. Step 3: Cross multiply
    637,092.79x = 879,142.75 × 378,955.51
  4. Step 4: Simplify right side
    637,092.79x = 333,155,989,189.05
  5. Step 5: Solve for x
    x = 333,155,989,189.05/637,092.79
  6. Step 6: Final answer
    x = 522,931.66

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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.