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Finding the Fourth Proportional to 922,696.72, 1,273,319.40 and 520,285.84

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Solution

The fourth proportional to 922,696.72, 1,273,319.40 and 520,285.84 is: 717,993.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,696.72 : 1,273,319.40 = 520,285.84 : x
  2. Step 2: Convert to fraction form
    922,696.72/1,273,319.40 = 520,285.84/x
  3. Step 3: Cross multiply
    922,696.72x = 1,273,319.40 × 520,285.84
  4. Step 4: Simplify right side
    922,696.72x = 662,490,053,617.30
  5. Step 5: Solve for x
    x = 662,490,053,617.30/922,696.72
  6. Step 6: Final answer
    x = 717,993.29

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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.