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Finding the Fourth Proportional to 630,549, 870,154.50 and 344,068.20

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Solution

The fourth proportional to 630,549, 870,154.50 and 344,068.20 is: 474,812.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,549 : 870,154.50 = 344,068.20 : x
  2. Step 2: Convert to fraction form
    630,549/870,154.50 = 344,068.20/x
  3. Step 3: Cross multiply
    630,549x = 870,154.50 × 344,068.20
  4. Step 4: Simplify right side
    630,549x = 299,392,492,536.90
  5. Step 5: Solve for x
    x = 299,392,492,536.90/630,549
  6. Step 6: Final answer
    x = 474,812.41

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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.