Home / 1,385,423.80-2,078,135.70-487,004.20

Finding the Fourth Proportional to 1,385,423.80, 2,078,135.70 and 487,004.20

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Solution

The fourth proportional to 1,385,423.80, 2,078,135.70 and 487,004.20 is: 730,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,423.80 : 2,078,135.70 = 487,004.20 : x
  2. Step 2: Convert to fraction form
    1,385,423.80/2,078,135.70 = 487,004.20/x
  3. Step 3: Cross multiply
    1,385,423.80x = 2,078,135.70 × 487,004.20
  4. Step 4: Simplify right side
    1,385,423.80x = 1,012,060,814,069.94
  5. Step 5: Solve for x
    x = 1,012,060,814,069.94/1,385,423.80
  6. Step 6: Final answer
    x = 730,506.30

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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.