Home / 740,666.21-1,022,140.37-418,389.89

Finding the Fourth Proportional to 740,666.21, 1,022,140.37 and 418,389.89

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Solution

The fourth proportional to 740,666.21, 1,022,140.37 and 418,389.89 is: 577,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,666.21 : 1,022,140.37 = 418,389.89 : x
  2. Step 2: Convert to fraction form
    740,666.21/1,022,140.37 = 418,389.89/x
  3. Step 3: Cross multiply
    740,666.21x = 1,022,140.37 × 418,389.89
  4. Step 4: Simplify right side
    740,666.21x = 427,653,194,876.91
  5. Step 5: Solve for x
    x = 427,653,194,876.91/740,666.21
  6. Step 6: Final answer
    x = 577,389.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.