Home / 927,380.14-1,390,909.59-278,946.94

Finding the Fourth Proportional to 927,380.14, 1,390,909.59 and 278,946.94

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Solution

The fourth proportional to 927,380.14, 1,390,909.59 and 278,946.94 is: 418,372.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,380.14 : 1,390,909.59 = 278,946.94 : x
  2. Step 2: Convert to fraction form
    927,380.14/1,390,909.59 = 278,946.94/x
  3. Step 3: Cross multiply
    927,380.14x = 1,390,909.59 × 278,946.94
  4. Step 4: Simplify right side
    927,380.14x = 387,989,978,470.48
  5. Step 5: Solve for x
    x = 387,989,978,470.48/927,380.14
  6. Step 6: Final answer
    x = 418,372.10

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1.5x scale

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.