Home / 1,012,139.80-1,516,460.10-478,511.80

Finding the Fourth Proportional to 1,012,139.80, 1,516,460.10 and 478,511.80

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Solution

The fourth proportional to 1,012,139.80, 1,516,460.10 and 478,511.80 is: 716,940.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,139.80 : 1,516,460.10 = 478,511.80 : x
  2. Step 2: Convert to fraction form
    1,012,139.80/1,516,460.10 = 478,511.80/x
  3. Step 3: Cross multiply
    1,012,139.80x = 1,516,460.10 × 478,511.80
  4. Step 4: Simplify right side
    1,012,139.80x = 725,644,052,079.18
  5. Step 5: Solve for x
    x = 725,644,052,079.18/1,012,139.80
  6. Step 6: Final answer
    x = 716,940.54

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Double scale
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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.