Home / 1,069,378.20-1,604,269.60-429,731.73

Finding the Fourth Proportional to 1,069,378.20, 1,604,269.60 and 429,731.73

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Solution

The fourth proportional to 1,069,378.20, 1,604,269.60 and 429,731.73 is: 644,678.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,378.20 : 1,604,269.60 = 429,731.73 : x
  2. Step 2: Convert to fraction form
    1,069,378.20/1,604,269.60 = 429,731.73/x
  3. Step 3: Cross multiply
    1,069,378.20x = 1,604,269.60 × 429,731.73
  4. Step 4: Simplify right side
    1,069,378.20x = 689,405,545,921.31
  5. Step 5: Solve for x
    x = 689,405,545,921.31/1,069,378.20
  6. Step 6: Final answer
    x = 644,678.89

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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.