Home / 455,135.40-681,937.65-360,000.90

Finding the Fourth Proportional to 455,135.40, 681,937.65 and 360,000.90

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Solution

The fourth proportional to 455,135.40, 681,937.65 and 360,000.90 is: 539,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,135.40 : 681,937.65 = 360,000.90 : x
  2. Step 2: Convert to fraction form
    455,135.40/681,937.65 = 360,000.90/x
  3. Step 3: Cross multiply
    455,135.40x = 681,937.65 × 360,000.90
  4. Step 4: Simplify right side
    455,135.40x = 245,498,167,743.89
  5. Step 5: Solve for x
    x = 245,498,167,743.89/455,135.40
  6. Step 6: Final answer
    x = 539,395.90

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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.