Home / 838,005.12-1,156,367.09-470,398.11

Finding the Fourth Proportional to 838,005.12, 1,156,367.09 and 470,398.11

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Solution

The fourth proportional to 838,005.12, 1,156,367.09 and 470,398.11 is: 649,104.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,005.12 : 1,156,367.09 = 470,398.11 : x
  2. Step 2: Convert to fraction form
    838,005.12/1,156,367.09 = 470,398.11/x
  3. Step 3: Cross multiply
    838,005.12x = 1,156,367.09 × 470,398.11
  4. Step 4: Simplify right side
    838,005.12x = 543,952,891,048.11
  5. Step 5: Solve for x
    x = 543,952,891,048.11/838,005.12
  6. Step 6: Final answer
    x = 649,104.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.