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Finding the Fourth Proportional to 518,828.40, 715,994.16 and 292,473.84

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Solution

The fourth proportional to 518,828.40, 715,994.16 and 292,473.84 is: 403,620.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,828.40 : 715,994.16 = 292,473.84 : x
  2. Step 2: Convert to fraction form
    518,828.40/715,994.16 = 292,473.84/x
  3. Step 3: Cross multiply
    518,828.40x = 715,994.16 × 292,473.84
  4. Step 4: Simplify right side
    518,828.40x = 209,409,561,392.77
  5. Step 5: Solve for x
    x = 209,409,561,392.77/518,828.40
  6. Step 6: Final answer
    x = 403,620.08

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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.