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Finding the Fourth Proportional to 707,070.52, 975,747.18 and 389,118.52

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Solution

The fourth proportional to 707,070.52, 975,747.18 and 389,118.52 is: 536,977.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,070.52 : 975,747.18 = 389,118.52 : x
  2. Step 2: Convert to fraction form
    707,070.52/975,747.18 = 389,118.52/x
  3. Step 3: Cross multiply
    707,070.52x = 975,747.18 × 389,118.52
  4. Step 4: Simplify right side
    707,070.52x = 379,681,298,575.77
  5. Step 5: Solve for x
    x = 379,681,298,575.77/707,070.52
  6. Step 6: Final answer
    x = 536,977.98

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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.