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Finding the Fourth Proportional to 612,037.80, 918,056.70 and 363,205.80

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Solution

The fourth proportional to 612,037.80, 918,056.70 and 363,205.80 is: 544,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,037.80 : 918,056.70 = 363,205.80 : x
  2. Step 2: Convert to fraction form
    612,037.80/918,056.70 = 363,205.80/x
  3. Step 3: Cross multiply
    612,037.80x = 918,056.70 × 363,205.80
  4. Step 4: Simplify right side
    612,037.80x = 333,443,518,168.86
  5. Step 5: Solve for x
    x = 333,443,518,168.86/612,037.80
  6. Step 6: Final answer
    x = 544,808.70

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Similar ratio
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1.5x scale

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.