Home / 808,220.40-1,214,080.20-778,477.20

Finding the Fourth Proportional to 808,220.40, 1,214,080.20 and 778,477.20

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Solution

The fourth proportional to 808,220.40, 1,214,080.20 and 778,477.20 is: 1,169,401.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,220.40 : 1,214,080.20 = 778,477.20 : x
  2. Step 2: Convert to fraction form
    808,220.40/1,214,080.20 = 778,477.20/x
  3. Step 3: Cross multiply
    808,220.40x = 1,214,080.20 × 778,477.20
  4. Step 4: Simplify right side
    808,220.40x = 945,133,754,671.44
  5. Step 5: Solve for x
    x = 945,133,754,671.44/808,220.40
  6. Step 6: Final answer
    x = 1,169,401.01

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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.