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Finding the Fourth Proportional to 569,897.80, 786,390.45 and 328,258.96

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Solution

The fourth proportional to 569,897.80, 786,390.45 and 328,258.96 is: 452,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,897.80 : 786,390.45 = 328,258.96 : x
  2. Step 2: Convert to fraction form
    569,897.80/786,390.45 = 328,258.96/x
  3. Step 3: Cross multiply
    569,897.80x = 786,390.45 × 328,258.96
  4. Step 4: Simplify right side
    569,897.80x = 258,139,711,270.93
  5. Step 5: Solve for x
    x = 258,139,711,270.93/569,897.80
  6. Step 6: Final answer
    x = 452,957.90

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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.