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Finding the Fourth Proportional to 542,558.11, 748,661.34 and 297,478.36

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Solution

The fourth proportional to 542,558.11, 748,661.34 and 297,478.36 is: 410,482.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,558.11 : 748,661.34 = 297,478.36 : x
  2. Step 2: Convert to fraction form
    542,558.11/748,661.34 = 297,478.36/x
  3. Step 3: Cross multiply
    542,558.11x = 748,661.34 × 297,478.36
  4. Step 4: Simplify right side
    542,558.11x = 222,710,547,618.60
  5. Step 5: Solve for x
    x = 222,710,547,618.60/542,558.11
  6. Step 6: Final answer
    x = 410,482.39

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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.