Home / 921,342.48-1,271,453.84-513,435.36

Finding the Fourth Proportional to 921,342.48, 1,271,453.84 and 513,435.36

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Solution

The fourth proportional to 921,342.48, 1,271,453.84 and 513,435.36 is: 708,541.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,342.48 : 1,271,453.84 = 513,435.36 : x
  2. Step 2: Convert to fraction form
    921,342.48/1,271,453.84 = 513,435.36/x
  3. Step 3: Cross multiply
    921,342.48x = 1,271,453.84 × 513,435.36
  4. Step 4: Simplify right side
    921,342.48x = 652,809,360,063.78
  5. Step 5: Solve for x
    x = 652,809,360,063.78/921,342.48
  6. Step 6: Final answer
    x = 708,541.48

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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.