Home / 648,097.20-972,145.80-553,618.80

Finding the Fourth Proportional to 648,097.20, 972,145.80 and 553,618.80

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Solution

The fourth proportional to 648,097.20, 972,145.80 and 553,618.80 is: 830,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,097.20 : 972,145.80 = 553,618.80 : x
  2. Step 2: Convert to fraction form
    648,097.20/972,145.80 = 553,618.80/x
  3. Step 3: Cross multiply
    648,097.20x = 972,145.80 × 553,618.80
  4. Step 4: Simplify right side
    648,097.20x = 538,198,191,221.04
  5. Step 5: Solve for x
    x = 538,198,191,221.04/648,097.20
  6. Step 6: Final answer
    x = 830,428.20

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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.