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Finding the Fourth Proportional to 571,686.84, 788,870.94 and 330,047.40

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Solution

The fourth proportional to 571,686.84, 788,870.94 and 330,047.40 is: 455,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,686.84 : 788,870.94 = 330,047.40 : x
  2. Step 2: Convert to fraction form
    571,686.84/788,870.94 = 330,047.40/x
  3. Step 3: Cross multiply
    571,686.84x = 788,870.94 × 330,047.40
  4. Step 4: Simplify right side
    571,686.84x = 260,364,802,682.56
  5. Step 5: Solve for x
    x = 260,364,802,682.56/571,686.84
  6. Step 6: Final answer
    x = 455,432.56

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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.