Home / 987,090.40-1,480,981.20-426,527.20

Finding the Fourth Proportional to 987,090.40, 1,480,981.20 and 426,527.20

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Solution

The fourth proportional to 987,090.40, 1,480,981.20 and 426,527.20 is: 639,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,090.40 : 1,480,981.20 = 426,527.20 : x
  2. Step 2: Convert to fraction form
    987,090.40/1,480,981.20 = 426,527.20/x
  3. Step 3: Cross multiply
    987,090.40x = 1,480,981.20 × 426,527.20
  4. Step 4: Simplify right side
    987,090.40x = 631,678,764,488.64
  5. Step 5: Solve for x
    x = 631,678,764,488.64/987,090.40
  6. Step 6: Final answer
    x = 639,940.14

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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.