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Finding the Fourth Proportional to 660,034.36, 910,848 and 358,228.36

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Solution

The fourth proportional to 660,034.36, 910,848 and 358,228.36 is: 494,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,034.36 : 910,848 = 358,228.36 : x
  2. Step 2: Convert to fraction form
    660,034.36/910,848 = 358,228.36/x
  3. Step 3: Cross multiply
    660,034.36x = 910,848 × 358,228.36
  4. Step 4: Simplify right side
    660,034.36x = 326,291,585,249.28
  5. Step 5: Solve for x
    x = 326,291,585,249.28/660,034.36
  6. Step 6: Final answer
    x = 494,355.45

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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.