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Finding the Fourth Proportional to 704,803.80, 1,057,205.70 and 406,205.40

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Solution

The fourth proportional to 704,803.80, 1,057,205.70 and 406,205.40 is: 609,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,803.80 : 1,057,205.70 = 406,205.40 : x
  2. Step 2: Convert to fraction form
    704,803.80/1,057,205.70 = 406,205.40/x
  3. Step 3: Cross multiply
    704,803.80x = 1,057,205.70 × 406,205.40
  4. Step 4: Simplify right side
    704,803.80x = 429,442,664,250.78
  5. Step 5: Solve for x
    x = 429,442,664,250.78/704,803.80
  6. Step 6: Final answer
    x = 609,308.10

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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.