Home / 738,293.86-1,018,848.27-428,257.45

Finding the Fourth Proportional to 738,293.86, 1,018,848.27 and 428,257.45

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Solution

The fourth proportional to 738,293.86, 1,018,848.27 and 428,257.45 is: 590,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,293.86 : 1,018,848.27 = 428,257.45 : x
  2. Step 2: Convert to fraction form
    738,293.86/1,018,848.27 = 428,257.45/x
  3. Step 3: Cross multiply
    738,293.86x = 1,018,848.27 × 428,257.45
  4. Step 4: Simplify right side
    738,293.86x = 436,329,362,047.11
  5. Step 5: Solve for x
    x = 436,329,362,047.11/738,293.86
  6. Step 6: Final answer
    x = 590,996.87

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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.