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Finding the Fourth Proportional to 626,549.55, 864,639.36 and 340,069.76

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Solution

The fourth proportional to 626,549.55, 864,639.36 and 340,069.76 is: 469,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,549.55 : 864,639.36 = 340,069.76 : x
  2. Step 2: Convert to fraction form
    626,549.55/864,639.36 = 340,069.76/x
  3. Step 3: Cross multiply
    626,549.55x = 864,639.36 × 340,069.76
  4. Step 4: Simplify right side
    626,549.55x = 294,037,698,560.95
  5. Step 5: Solve for x
    x = 294,037,698,560.95/626,549.55
  6. Step 6: Final answer
    x = 469,296.80

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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.