Home / 743,511.05-1,026,041.63-421,220.38

Finding the Fourth Proportional to 743,511.05, 1,026,041.63 and 421,220.38

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Solution

The fourth proportional to 743,511.05, 1,026,041.63 and 421,220.38 is: 581,282.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,511.05 : 1,026,041.63 = 421,220.38 : x
  2. Step 2: Convert to fraction form
    743,511.05/1,026,041.63 = 421,220.38/x
  3. Step 3: Cross multiply
    743,511.05x = 1,026,041.63 × 421,220.38
  4. Step 4: Simplify right side
    743,511.05x = 432,189,642,020.66
  5. Step 5: Solve for x
    x = 432,189,642,020.66/743,511.05
  6. Step 6: Final answer
    x = 581,282.07

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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.