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Finding the Fourth Proportional to 564,763.82, 778,715.52 and 421,274.75

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Solution

The fourth proportional to 564,763.82, 778,715.52 and 421,274.75 is: 580,867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,763.82 : 778,715.52 = 421,274.75 : x
  2. Step 2: Convert to fraction form
    564,763.82/778,715.52 = 421,274.75/x
  3. Step 3: Cross multiply
    564,763.82x = 778,715.52 × 421,274.75
  4. Step 4: Simplify right side
    564,763.82x = 328,053,185,095.57
  5. Step 5: Solve for x
    x = 328,053,185,095.57/564,763.82
  6. Step 6: Final answer
    x = 580,867.92

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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.