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Finding the Fourth Proportional to 630,210.21, 869,700.45 and 343,730.29

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Solution

The fourth proportional to 630,210.21, 869,700.45 and 343,730.29 is: 474,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,210.21 : 869,700.45 = 343,730.29 : x
  2. Step 2: Convert to fraction form
    630,210.21/869,700.45 = 343,730.29/x
  3. Step 3: Cross multiply
    630,210.21x = 869,700.45 × 343,730.29
  4. Step 4: Simplify right side
    630,210.21x = 298,942,387,891.63
  5. Step 5: Solve for x
    x = 298,942,387,891.63/630,210.21
  6. Step 6: Final answer
    x = 474,353.45

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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.