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Finding the Fourth Proportional to 540,392.70, 745,780.55 and 298,670.07

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Solution

The fourth proportional to 540,392.70, 745,780.55 and 298,670.07 is: 412,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,392.70 : 745,780.55 = 298,670.07 : x
  2. Step 2: Convert to fraction form
    540,392.70/745,780.55 = 298,670.07/x
  3. Step 3: Cross multiply
    540,392.70x = 745,780.55 × 298,670.07
  4. Step 4: Simplify right side
    540,392.70x = 222,742,327,579.79
  5. Step 5: Solve for x
    x = 222,742,327,579.79/540,392.70
  6. Step 6: Final answer
    x = 412,186.04

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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.