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Finding the Fourth Proportional to 692,527.68, 955,689.12 and 390,749.76

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Solution

The fourth proportional to 692,527.68, 955,689.12 and 390,749.76 is: 539,235.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,527.68 : 955,689.12 = 390,749.76 : x
  2. Step 2: Convert to fraction form
    692,527.68/955,689.12 = 390,749.76/x
  3. Step 3: Cross multiply
    692,527.68x = 955,689.12 × 390,749.76
  4. Step 4: Simplify right side
    692,527.68x = 373,435,294,274.61
  5. Step 5: Solve for x
    x = 373,435,294,274.61/692,527.68
  6. Step 6: Final answer
    x = 539,235.19

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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.