Home / 1,278,354.48-1,916,909.64-679,602.48

Finding the Fourth Proportional to 1,278,354.48, 1,916,909.64 and 679,602.48

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Solution

The fourth proportional to 1,278,354.48, 1,916,909.64 and 679,602.48 is: 1,019,073.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,354.48 : 1,916,909.64 = 679,602.48 : x
  2. Step 2: Convert to fraction form
    1,278,354.48/1,916,909.64 = 679,602.48/x
  3. Step 3: Cross multiply
    1,278,354.48x = 1,916,909.64 × 679,602.48
  4. Step 4: Simplify right side
    1,278,354.48x = 1,302,736,545,279.91
  5. Step 5: Solve for x
    x = 1,302,736,545,279.91/1,278,354.48
  6. Step 6: Final answer
    x = 1,019,073.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.