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Finding the Fourth Proportional to 570,620.72, 787,455.39 and 328,901.66

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Solution

The fourth proportional to 570,620.72, 787,455.39 and 328,901.66 is: 453,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,620.72 : 787,455.39 = 328,901.66 : x
  2. Step 2: Convert to fraction form
    570,620.72/787,455.39 = 328,901.66/x
  3. Step 3: Cross multiply
    570,620.72x = 787,455.39 × 328,901.66
  4. Step 4: Simplify right side
    570,620.72x = 258,995,384,946.95
  5. Step 5: Solve for x
    x = 258,995,384,946.95/570,620.72
  6. Step 6: Final answer
    x = 453,883.60

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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.