Home / 879,666.40-1,319,326.80-288,690.40

Finding the Fourth Proportional to 879,666.40, 1,319,326.80 and 288,690.40

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Solution

The fourth proportional to 879,666.40, 1,319,326.80 and 288,690.40 is: 432,978.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,666.40 : 1,319,326.80 = 288,690.40 : x
  2. Step 2: Convert to fraction form
    879,666.40/1,319,326.80 = 288,690.40/x
  3. Step 3: Cross multiply
    879,666.40x = 1,319,326.80 × 288,690.40
  4. Step 4: Simplify right side
    879,666.40x = 380,876,981,622.72
  5. Step 5: Solve for x
    x = 380,876,981,622.72/879,666.40
  6. Step 6: Final answer
    x = 432,978.89

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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.