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Finding the Fourth Proportional to 626,670.46, 864,807 and 340,190.74

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Solution

The fourth proportional to 626,670.46, 864,807 and 340,190.74 is: 469,464.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,670.46 : 864,807 = 340,190.74 : x
  2. Step 2: Convert to fraction form
    626,670.46/864,807 = 340,190.74/x
  3. Step 3: Cross multiply
    626,670.46x = 864,807 × 340,190.74
  4. Step 4: Simplify right side
    626,670.46x = 294,199,333,287.18
  5. Step 5: Solve for x
    x = 294,199,333,287.18/626,670.46
  6. Step 6: Final answer
    x = 469,464.18

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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.