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Finding the Fourth Proportional to 486,555.72, 671,444.21 and 268,779.34

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Solution

The fourth proportional to 486,555.72, 671,444.21 and 268,779.34 is: 370,914.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,555.72 : 671,444.21 = 268,779.34 : x
  2. Step 2: Convert to fraction form
    486,555.72/671,444.21 = 268,779.34/x
  3. Step 3: Cross multiply
    486,555.72x = 671,444.21 × 268,779.34
  4. Step 4: Simplify right side
    486,555.72x = 180,470,330,477.50
  5. Step 5: Solve for x
    x = 180,470,330,477.50/486,555.72
  6. Step 6: Final answer
    x = 370,914.01

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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.