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Finding the Fourth Proportional to 553,405.80, 830,108.70 and 549,906.60

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Solution

The fourth proportional to 553,405.80, 830,108.70 and 549,906.60 is: 824,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,405.80 : 830,108.70 = 549,906.60 : x
  2. Step 2: Convert to fraction form
    553,405.80/830,108.70 = 549,906.60/x
  3. Step 3: Cross multiply
    553,405.80x = 830,108.70 × 549,906.60
  4. Step 4: Simplify right side
    553,405.80x = 456,482,252,847.42
  5. Step 5: Solve for x
    x = 456,482,252,847.42/553,405.80
  6. Step 6: Final answer
    x = 824,859.90

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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.