Home / 1,226,419.20-1,692,456-689,875.20

Finding the Fourth Proportional to 1,226,419.20, 1,692,456 and 689,875.20

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Solution

The fourth proportional to 1,226,419.20, 1,692,456 and 689,875.20 is: 952,026.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,419.20 : 1,692,456 = 689,875.20 : x
  2. Step 2: Convert to fraction form
    1,226,419.20/1,692,456 = 689,875.20/x
  3. Step 3: Cross multiply
    1,226,419.20x = 1,692,456 × 689,875.20
  4. Step 4: Simplify right side
    1,226,419.20x = 1,167,583,421,491.20
  5. Step 5: Solve for x
    x = 1,167,583,421,491.20/1,226,419.20
  6. Step 6: Final answer
    x = 952,026.37

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Double scale
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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.