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Finding the Fourth Proportional to 537,779.20, 806,668.80 and 479,718.40

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Solution

The fourth proportional to 537,779.20, 806,668.80 and 479,718.40 is: 719,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,779.20 : 806,668.80 = 479,718.40 : x
  2. Step 2: Convert to fraction form
    537,779.20/806,668.80 = 479,718.40/x
  3. Step 3: Cross multiply
    537,779.20x = 806,668.80 × 479,718.40
  4. Step 4: Simplify right side
    537,779.20x = 386,973,866,065.92
  5. Step 5: Solve for x
    x = 386,973,866,065.92/537,779.20
  6. Step 6: Final answer
    x = 719,577.60

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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.