Home / 840,300.32-1,159,712.48-477,778.50

Finding the Fourth Proportional to 840,300.32, 1,159,712.48 and 477,778.50

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Solution

The fourth proportional to 840,300.32, 1,159,712.48 and 477,778.50 is: 659,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,300.32 : 1,159,712.48 = 477,778.50 : x
  2. Step 2: Convert to fraction form
    840,300.32/1,159,712.48 = 477,778.50/x
  3. Step 3: Cross multiply
    840,300.32x = 1,159,712.48 × 477,778.50
  4. Step 4: Simplify right side
    840,300.32x = 554,085,690,320.13
  5. Step 5: Solve for x
    x = 554,085,690,320.13/840,300.32
  6. Step 6: Final answer
    x = 659,390.07

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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.