Home / 551,605.03-761,210.39-309,882.47

Finding the Fourth Proportional to 551,605.03, 761,210.39 and 309,882.47

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Solution

The fourth proportional to 551,605.03, 761,210.39 and 309,882.47 is: 427,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,605.03 : 761,210.39 = 309,882.47 : x
  2. Step 2: Convert to fraction form
    551,605.03/761,210.39 = 309,882.47/x
  3. Step 3: Cross multiply
    551,605.03x = 761,210.39 × 309,882.47
  4. Step 4: Simplify right side
    551,605.03x = 235,885,752,811.52
  5. Step 5: Solve for x
    x = 235,885,752,811.52/551,605.03
  6. Step 6: Final answer
    x = 427,635.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.