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Finding the Fourth Proportional to 438,412.40, 657,618.60 and 349,838.90

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Solution

The fourth proportional to 438,412.40, 657,618.60 and 349,838.90 is: 524,758.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,412.40 : 657,618.60 = 349,838.90 : x
  2. Step 2: Convert to fraction form
    438,412.40/657,618.60 = 349,838.90/x
  3. Step 3: Cross multiply
    438,412.40x = 657,618.60 × 349,838.90
  4. Step 4: Simplify right side
    438,412.40x = 230,060,567,643.54
  5. Step 5: Solve for x
    x = 230,060,567,643.54/438,412.40
  6. Step 6: Final answer
    x = 524,758.35

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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.