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Finding the Fourth Proportional to 555,809.76, 767,281.92 and 372,364.20

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Solution

The fourth proportional to 555,809.76, 767,281.92 and 372,364.20 is: 514,039.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,809.76 : 767,281.92 = 372,364.20 : x
  2. Step 2: Convert to fraction form
    555,809.76/767,281.92 = 372,364.20/x
  3. Step 3: Cross multiply
    555,809.76x = 767,281.92 × 372,364.20
  4. Step 4: Simplify right side
    555,809.76x = 285,708,318,315.26
  5. Step 5: Solve for x
    x = 285,708,318,315.26/555,809.76
  6. Step 6: Final answer
    x = 514,039.76

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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.