Home / 912,920.40-1,369,380.60-771,202.80

Finding the Fourth Proportional to 912,920.40, 1,369,380.60 and 771,202.80

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Solution

The fourth proportional to 912,920.40, 1,369,380.60 and 771,202.80 is: 1,156,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,920.40 : 1,369,380.60 = 771,202.80 : x
  2. Step 2: Convert to fraction form
    912,920.40/1,369,380.60 = 771,202.80/x
  3. Step 3: Cross multiply
    912,920.40x = 1,369,380.60 × 771,202.80
  4. Step 4: Simplify right side
    912,920.40x = 1,056,070,152,985.68
  5. Step 5: Solve for x
    x = 1,056,070,152,985.68/912,920.40
  6. Step 6: Final answer
    x = 1,156,804.20

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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.