Home / 450,106.07-620,853.66-288,705.47

Finding the Fourth Proportional to 450,106.07, 620,853.66 and 288,705.47

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Solution

The fourth proportional to 450,106.07, 620,853.66 and 288,705.47 is: 398,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,106.07 : 620,853.66 = 288,705.47 : x
  2. Step 2: Convert to fraction form
    450,106.07/620,853.66 = 288,705.47/x
  3. Step 3: Cross multiply
    450,106.07x = 620,853.66 × 288,705.47
  4. Step 4: Simplify right side
    450,106.07x = 179,243,844,607.25
  5. Step 5: Solve for x
    x = 179,243,844,607.25/450,106.07
  6. Step 6: Final answer
    x = 398,225.79

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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.