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Finding the Fourth Proportional to 570,710.79, 787,589.06 and 328,988.97

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Solution

The fourth proportional to 570,710.79, 787,589.06 and 328,988.97 is: 454,009.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,710.79 : 787,589.06 = 328,988.97 : x
  2. Step 2: Convert to fraction form
    570,710.79/787,589.06 = 328,988.97/x
  3. Step 3: Cross multiply
    570,710.79x = 787,589.06 × 328,988.97
  4. Step 4: Simplify right side
    570,710.79x = 259,108,111,987.72
  5. Step 5: Solve for x
    x = 259,108,111,987.72/570,710.79
  6. Step 6: Final answer
    x = 454,009.49

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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.