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Finding the Fourth Proportional to 569,897.55, 786,390.12 and 328,258.71

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Solution

The fourth proportional to 569,897.55, 786,390.12 and 328,258.71 is: 452,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,897.55 : 786,390.12 = 328,258.71 : x
  2. Step 2: Convert to fraction form
    569,897.55/786,390.12 = 328,258.71/x
  3. Step 3: Cross multiply
    569,897.55x = 786,390.12 × 328,258.71
  4. Step 4: Simplify right side
    569,897.55x = 258,139,406,347.95
  5. Step 5: Solve for x
    x = 258,139,406,347.95/569,897.55
  6. Step 6: Final answer
    x = 452,957.56

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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.