Home / 743,568.89-1,026,122.54-421,340.40

Finding the Fourth Proportional to 743,568.89, 1,026,122.54 and 421,340.40

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Solution

The fourth proportional to 743,568.89, 1,026,122.54 and 421,340.40 is: 581,448.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,568.89 : 1,026,122.54 = 421,340.40 : x
  2. Step 2: Convert to fraction form
    743,568.89/1,026,122.54 = 421,340.40/x
  3. Step 3: Cross multiply
    743,568.89x = 1,026,122.54 × 421,340.40
  4. Step 4: Simplify right side
    743,568.89x = 432,346,879,345.91
  5. Step 5: Solve for x
    x = 432,346,879,345.91/743,568.89
  6. Step 6: Final answer
    x = 581,448.32

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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.