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Finding the Fourth Proportional to 674,153.64, 930,336.84 and 372,347.64

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Solution

The fourth proportional to 674,153.64, 930,336.84 and 372,347.64 is: 513,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,153.64 : 930,336.84 = 372,347.64 : x
  2. Step 2: Convert to fraction form
    674,153.64/930,336.84 = 372,347.64/x
  3. Step 3: Cross multiply
    674,153.64x = 930,336.84 × 372,347.64
  4. Step 4: Simplify right side
    674,153.64x = 346,408,726,779.06
  5. Step 5: Solve for x
    x = 346,408,726,779.06/674,153.64
  6. Step 6: Final answer
    x = 513,842.40

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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.