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Finding the Fourth Proportional to 630,684.60, 870,347.16 and 344,211

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Solution

The fourth proportional to 630,684.60, 870,347.16 and 344,211 is: 475,012.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,684.60 : 870,347.16 = 344,211 : x
  2. Step 2: Convert to fraction form
    630,684.60/870,347.16 = 344,211/x
  3. Step 3: Cross multiply
    630,684.60x = 870,347.16 × 344,211
  4. Step 4: Simplify right side
    630,684.60x = 299,583,066,290.76
  5. Step 5: Solve for x
    x = 299,583,066,290.76/630,684.60
  6. Step 6: Final answer
    x = 475,012.50

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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.