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Finding the Fourth Proportional to 570,271.70, 787,150.22 and 328,715.72

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Solution

The fourth proportional to 570,271.70, 787,150.22 and 328,715.72 is: 453,728.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,271.70 : 787,150.22 = 328,715.72 : x
  2. Step 2: Convert to fraction form
    570,271.70/787,150.22 = 328,715.72/x
  3. Step 3: Cross multiply
    570,271.70x = 787,150.22 × 328,715.72
  4. Step 4: Simplify right side
    570,271.70x = 258,748,651,315.46
  5. Step 5: Solve for x
    x = 258,748,651,315.46/570,271.70
  6. Step 6: Final answer
    x = 453,728.72

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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.