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Finding the Fourth Proportional to 612,117.60, 918,176.40 and 550,116.15

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Solution

The fourth proportional to 612,117.60, 918,176.40 and 550,116.15 is: 825,174.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,117.60 : 918,176.40 = 550,116.15 : x
  2. Step 2: Convert to fraction form
    612,117.60/918,176.40 = 550,116.15/x
  3. Step 3: Cross multiply
    612,117.60x = 918,176.40 × 550,116.15
  4. Step 4: Simplify right side
    612,117.60x = 505,103,666,188.86
  5. Step 5: Solve for x
    x = 505,103,666,188.86/612,117.60
  6. Step 6: Final answer
    x = 825,174.23

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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.