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Finding the Fourth Proportional to 691,526.90, 953,895.86 and 538,322.60

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Solution

The fourth proportional to 691,526.90, 953,895.86 and 538,322.60 is: 742,565.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,526.90 : 953,895.86 = 538,322.60 : x
  2. Step 2: Convert to fraction form
    691,526.90/953,895.86 = 538,322.60/x
  3. Step 3: Cross multiply
    691,526.90x = 953,895.86 × 538,322.60
  4. Step 4: Simplify right side
    691,526.90x = 513,503,699,484.44
  5. Step 5: Solve for x
    x = 513,503,699,484.44/691,526.90
  6. Step 6: Final answer
    x = 742,565.04

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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.