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Finding the Fourth Proportional to 1,249,651.78, 1,724,527.65 and 676,691.98

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Solution

The fourth proportional to 1,249,651.78, 1,724,527.65 and 676,691.98 is: 933,839.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,651.78 : 1,724,527.65 = 676,691.98 : x
  2. Step 2: Convert to fraction form
    1,249,651.78/1,724,527.65 = 676,691.98/x
  3. Step 3: Cross multiply
    1,249,651.78x = 1,724,527.65 × 676,691.98
  4. Step 4: Simplify right side
    1,249,651.78x = 1,166,974,030,043.25
  5. Step 5: Solve for x
    x = 1,166,974,030,043.25/1,249,651.78
  6. Step 6: Final answer
    x = 933,839.37

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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.