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Finding the Fourth Proportional to 546,300.55, 754,148.60 and 389,237.72

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Solution

The fourth proportional to 546,300.55, 754,148.60 and 389,237.72 is: 537,328.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,300.55 : 754,148.60 = 389,237.72 : x
  2. Step 2: Convert to fraction form
    546,300.55/754,148.60 = 389,237.72/x
  3. Step 3: Cross multiply
    546,300.55x = 754,148.60 × 389,237.72
  4. Step 4: Simplify right side
    546,300.55x = 293,543,081,544.38
  5. Step 5: Solve for x
    x = 293,543,081,544.38/546,300.55
  6. Step 6: Final answer
    x = 537,328.92

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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.