Home / 813,612.90-1,220,200.65-340,200.30

Finding the Fourth Proportional to 813,612.90, 1,220,200.65 and 340,200.30

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Solution

The fourth proportional to 813,612.90, 1,220,200.65 and 340,200.30 is: 510,209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,612.90 : 1,220,200.65 = 340,200.30 : x
  2. Step 2: Convert to fraction form
    813,612.90/1,220,200.65 = 340,200.30/x
  3. Step 3: Cross multiply
    813,612.90x = 1,220,200.65 × 340,200.30
  4. Step 4: Simplify right side
    813,612.90x = 415,112,627,190.20
  5. Step 5: Solve for x
    x = 415,112,627,190.20/813,612.90
  6. Step 6: Final answer
    x = 510,209.00

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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.