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Finding the Fourth Proportional to 626,639.39, 864,763.45 and 340,159.67

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Solution

The fourth proportional to 626,639.39, 864,763.45 and 340,159.67 is: 469,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,639.39 : 864,763.45 = 340,159.67 : x
  2. Step 2: Convert to fraction form
    626,639.39/864,763.45 = 340,159.67/x
  3. Step 3: Cross multiply
    626,639.39x = 864,763.45 × 340,159.67
  4. Step 4: Simplify right side
    626,639.39x = 294,157,649,780.06
  5. Step 5: Solve for x
    x = 294,157,649,780.06/626,639.39
  6. Step 6: Final answer
    x = 469,420.94

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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.