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Finding the Fourth Proportional to 684,650.40, 944,744.82 and 378,678.18

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Solution

The fourth proportional to 684,650.40, 944,744.82 and 378,678.18 is: 522,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,650.40 : 944,744.82 = 378,678.18 : x
  2. Step 2: Convert to fraction form
    684,650.40/944,744.82 = 378,678.18/x
  3. Step 3: Cross multiply
    684,650.40x = 944,744.82 × 378,678.18
  4. Step 4: Simplify right side
    684,650.40x = 357,754,249,002.03
  5. Step 5: Solve for x
    x = 357,754,249,002.03/684,650.40
  6. Step 6: Final answer
    x = 522,535.66

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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.