Home / 670,516.40-1,005,774.60-404,139.80

Finding the Fourth Proportional to 670,516.40, 1,005,774.60 and 404,139.80

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Solution

The fourth proportional to 670,516.40, 1,005,774.60 and 404,139.80 is: 606,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,516.40 : 1,005,774.60 = 404,139.80 : x
  2. Step 2: Convert to fraction form
    670,516.40/1,005,774.60 = 404,139.80/x
  3. Step 3: Cross multiply
    670,516.40x = 1,005,774.60 × 404,139.80
  4. Step 4: Simplify right side
    670,516.40x = 406,473,545,689.08
  5. Step 5: Solve for x
    x = 406,473,545,689.08/670,516.40
  6. Step 6: Final answer
    x = 606,209.70

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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.