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Finding the Fourth Proportional to 922,686.72, 1,273,305.60 and 520,275.84

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Solution

The fourth proportional to 922,686.72, 1,273,305.60 and 520,275.84 is: 717,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,686.72 : 1,273,305.60 = 520,275.84 : x
  2. Step 2: Convert to fraction form
    922,686.72/1,273,305.60 = 520,275.84/x
  3. Step 3: Cross multiply
    922,686.72x = 1,273,305.60 × 520,275.84
  4. Step 4: Simplify right side
    922,686.72x = 662,470,140,616.70
  5. Step 5: Solve for x
    x = 662,470,140,616.70/922,686.72
  6. Step 6: Final answer
    x = 717,979.49

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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.