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Finding the Fourth Proportional to 632,498.69, 872,868.75 and 346,018.78

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Solution

The fourth proportional to 632,498.69, 872,868.75 and 346,018.78 is: 477,517.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,498.69 : 872,868.75 = 346,018.78 : x
  2. Step 2: Convert to fraction form
    632,498.69/872,868.75 = 346,018.78/x
  3. Step 3: Cross multiply
    632,498.69x = 872,868.75 × 346,018.78
  4. Step 4: Simplify right side
    632,498.69x = 302,028,975,610.78
  5. Step 5: Solve for x
    x = 302,028,975,610.78/632,498.69
  6. Step 6: Final answer
    x = 477,517.16

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Double scale
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Similar ratio
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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.