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Finding the Fourth Proportional to 637,095.79, 879,146.88 and 378,958.51

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Solution

The fourth proportional to 637,095.79, 879,146.88 and 378,958.51 is: 522,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,095.79 : 879,146.88 = 378,958.51 : x
  2. Step 2: Convert to fraction form
    637,095.79/879,146.88 = 378,958.51/x
  3. Step 3: Cross multiply
    637,095.79x = 879,146.88 × 378,958.51
  4. Step 4: Simplify right side
    637,095.79x = 333,160,191,715.95
  5. Step 5: Solve for x
    x = 333,160,191,715.95/637,095.79
  6. Step 6: Final answer
    x = 522,935.79

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Double scale
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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.