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Finding the Fourth Proportional to 857,699, 1,182,849.72 and 535,438.88

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Solution

The fourth proportional to 857,699, 1,182,849.72 and 535,438.88 is: 738,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,699 : 1,182,849.72 = 535,438.88 : x
  2. Step 2: Convert to fraction form
    857,699/1,182,849.72 = 535,438.88/x
  3. Step 3: Cross multiply
    857,699x = 1,182,849.72 × 535,438.88
  4. Step 4: Simplify right side
    857,699x = 633,343,729,285.11
  5. Step 5: Solve for x
    x = 633,343,729,285.11/857,699
  6. Step 6: Final answer
    x = 738,421.90

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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.