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Finding the Fourth Proportional to 630,646.50, 870,310.62 and 344,184.96

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Solution

The fourth proportional to 630,646.50, 870,310.62 and 344,184.96 is: 474,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,646.50 : 870,310.62 = 344,184.96 : x
  2. Step 2: Convert to fraction form
    630,646.50/870,310.62 = 344,184.96/x
  3. Step 3: Cross multiply
    630,646.50x = 870,310.62 × 344,184.96
  4. Step 4: Simplify right side
    630,646.50x = 299,547,825,932.28
  5. Step 5: Solve for x
    x = 299,547,825,932.28/630,646.50
  6. Step 6: Final answer
    x = 474,985.31

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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.