Home / 803,780.40-1,205,894.58-655,421.62

Finding the Fourth Proportional to 803,780.40, 1,205,894.58 and 655,421.62

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Solution

The fourth proportional to 803,780.40, 1,205,894.58 and 655,421.62 is: 983,315.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,780.40 : 1,205,894.58 = 655,421.62 : x
  2. Step 2: Convert to fraction form
    803,780.40/1,205,894.58 = 655,421.62/x
  3. Step 3: Cross multiply
    803,780.40x = 1,205,894.58 × 655,421.62
  4. Step 4: Simplify right side
    803,780.40x = 790,369,379,172.82
  5. Step 5: Solve for x
    x = 790,369,379,172.82/803,780.40
  6. Step 6: Final answer
    x = 983,315.07

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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.