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Finding the Fourth Proportional to 1,249,678.57, 1,724,557.32 and 676,719.19

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Solution

The fourth proportional to 1,249,678.57, 1,724,557.32 and 676,719.19 is: 933,872.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,678.57 : 1,724,557.32 = 676,719.19 : x
  2. Step 2: Convert to fraction form
    1,249,678.57/1,724,557.32 = 676,719.19/x
  3. Step 3: Cross multiply
    1,249,678.57x = 1,724,557.32 × 676,719.19
  4. Step 4: Simplify right side
    1,249,678.57x = 1,167,041,032,698.97
  5. Step 5: Solve for x
    x = 1,167,041,032,698.97/1,249,678.57
  6. Step 6: Final answer
    x = 933,872.97

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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.