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Finding the Fourth Proportional to 1,249,728.35, 1,724,621.73 and 676,768.37

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Solution

The fourth proportional to 1,249,728.35, 1,724,621.73 and 676,768.37 is: 933,938.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,728.35 : 1,724,621.73 = 676,768.37 : x
  2. Step 2: Convert to fraction form
    1,249,728.35/1,724,621.73 = 676,768.37/x
  3. Step 3: Cross multiply
    1,249,728.35x = 1,724,621.73 × 676,768.37
  4. Step 4: Simplify right side
    1,249,728.35x = 1,167,169,425,917.69
  5. Step 5: Solve for x
    x = 1,167,169,425,917.69/1,249,728.35
  6. Step 6: Final answer
    x = 933,938.51

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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.