Home / 828,305.80-1,242,458.70-429,068.95

Finding the Fourth Proportional to 828,305.80, 1,242,458.70 and 429,068.95

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Solution

The fourth proportional to 828,305.80, 1,242,458.70 and 429,068.95 is: 643,603.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,305.80 : 1,242,458.70 = 429,068.95 : x
  2. Step 2: Convert to fraction form
    828,305.80/1,242,458.70 = 429,068.95/x
  3. Step 3: Cross multiply
    828,305.80x = 1,242,458.70 × 429,068.95
  4. Step 4: Simplify right side
    828,305.80x = 533,100,449,827.37
  5. Step 5: Solve for x
    x = 533,100,449,827.37/828,305.80
  6. Step 6: Final answer
    x = 643,603.43

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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.