Home / 853,065.46-1,280,385.51-432,636.58

Finding the Fourth Proportional to 853,065.46, 1,280,385.51 and 432,636.58

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Solution

The fourth proportional to 853,065.46, 1,280,385.51 and 432,636.58 is: 649,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,065.46 : 1,280,385.51 = 432,636.58 : x
  2. Step 2: Convert to fraction form
    853,065.46/1,280,385.51 = 432,636.58/x
  3. Step 3: Cross multiply
    853,065.46x = 1,280,385.51 × 432,636.58
  4. Step 4: Simplify right side
    853,065.46x = 553,941,608,127.96
  5. Step 5: Solve for x
    x = 553,941,608,127.96/853,065.46
  6. Step 6: Final answer
    x = 649,354.16

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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.