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Finding the Fourth Proportional to 521,675.76, 719,901.72 and 283,211.76

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Solution

The fourth proportional to 521,675.76, 719,901.72 and 283,211.76 is: 390,826.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,675.76 : 719,901.72 = 283,211.76 : x
  2. Step 2: Convert to fraction form
    521,675.76/719,901.72 = 283,211.76/x
  3. Step 3: Cross multiply
    521,675.76x = 719,901.72 × 283,211.76
  4. Step 4: Simplify right side
    521,675.76x = 203,884,633,148.23
  5. Step 5: Solve for x
    x = 203,884,633,148.23/521,675.76
  6. Step 6: Final answer
    x = 390,826.35

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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.