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Finding the Fourth Proportional to 647,321.43, 893,686.31 and 575,502.69

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Solution

The fourth proportional to 647,321.43, 893,686.31 and 575,502.69 is: 794,533.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,321.43 : 893,686.31 = 575,502.69 : x
  2. Step 2: Convert to fraction form
    647,321.43/893,686.31 = 575,502.69/x
  3. Step 3: Cross multiply
    647,321.43x = 893,686.31 × 575,502.69
  4. Step 4: Simplify right side
    647,321.43x = 514,318,875,421.17
  5. Step 5: Solve for x
    x = 514,318,875,421.17/647,321.43
  6. Step 6: Final answer
    x = 794,533.99

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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.