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Finding the Fourth Proportional to 628,560, 867,412.80 and 360,443.52

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Solution

The fourth proportional to 628,560, 867,412.80 and 360,443.52 is: 497,412.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,560 : 867,412.80 = 360,443.52 : x
  2. Step 2: Convert to fraction form
    628,560/867,412.80 = 360,443.52/x
  3. Step 3: Cross multiply
    628,560x = 867,412.80 × 360,443.52
  4. Step 4: Simplify right side
    628,560x = 312,653,322,925.06
  5. Step 5: Solve for x
    x = 312,653,322,925.06/628,560
  6. Step 6: Final answer
    x = 497,412.06

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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.