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Finding the Fourth Proportional to 421,422.51, 581,066.14 and 340,600.10

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Solution

The fourth proportional to 421,422.51, 581,066.14 and 340,600.10 is: 469,626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,422.51 : 581,066.14 = 340,600.10 : x
  2. Step 2: Convert to fraction form
    421,422.51/581,066.14 = 340,600.10/x
  3. Step 3: Cross multiply
    421,422.51x = 581,066.14 × 340,600.10
  4. Step 4: Simplify right side
    421,422.51x = 197,911,184,539.11
  5. Step 5: Solve for x
    x = 197,911,184,539.11/421,422.51
  6. Step 6: Final answer
    x = 469,626.52

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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.