Home / 993,812.80-1,490,719.20-916,830.40

Finding the Fourth Proportional to 993,812.80, 1,490,719.20 and 916,830.40

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Solution

The fourth proportional to 993,812.80, 1,490,719.20 and 916,830.40 is: 1,375,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,812.80 : 1,490,719.20 = 916,830.40 : x
  2. Step 2: Convert to fraction form
    993,812.80/1,490,719.20 = 916,830.40/x
  3. Step 3: Cross multiply
    993,812.80x = 1,490,719.20 × 916,830.40
  4. Step 4: Simplify right side
    993,812.80x = 1,366,736,680,423.68
  5. Step 5: Solve for x
    x = 1,366,736,680,423.68/993,812.80
  6. Step 6: Final answer
    x = 1,375,245.60

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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.