Home / 847,685.10-1,272,511.80-488,142.30

Finding the Fourth Proportional to 847,685.10, 1,272,511.80 and 488,142.30

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Solution

The fourth proportional to 847,685.10, 1,272,511.80 and 488,142.30 is: 732,780.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,685.10 : 1,272,511.80 = 488,142.30 : x
  2. Step 2: Convert to fraction form
    847,685.10/1,272,511.80 = 488,142.30/x
  3. Step 3: Cross multiply
    847,685.10x = 1,272,511.80 × 488,142.30
  4. Step 4: Simplify right side
    847,685.10x = 621,166,836,829.14
  5. Step 5: Solve for x
    x = 621,166,836,829.14/847,685.10
  6. Step 6: Final answer
    x = 732,780.18

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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.