Home / 679,920.40-1,020,666.30-364,992.40

Finding the Fourth Proportional to 679,920.40, 1,020,666.30 and 364,992.40

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Solution

The fourth proportional to 679,920.40, 1,020,666.30 and 364,992.40 is: 547,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,920.40 : 1,020,666.30 = 364,992.40 : x
  2. Step 2: Convert to fraction form
    679,920.40/1,020,666.30 = 364,992.40/x
  3. Step 3: Cross multiply
    679,920.40x = 1,020,666.30 × 364,992.40
  4. Step 4: Simplify right side
    679,920.40x = 372,535,442,436.12
  5. Step 5: Solve for x
    x = 372,535,442,436.12/679,920.40
  6. Step 6: Final answer
    x = 547,910.38

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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.