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Finding the Fourth Proportional to 630,975.72, 870,083.58 and 415,840.56

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Solution

The fourth proportional to 630,975.72, 870,083.58 and 415,840.56 is: 573,423.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,975.72 : 870,083.58 = 415,840.56 : x
  2. Step 2: Convert to fraction form
    630,975.72/870,083.58 = 415,840.56/x
  3. Step 3: Cross multiply
    630,975.72x = 870,083.58 × 415,840.56
  4. Step 4: Simplify right side
    630,975.72x = 361,816,043,154.01
  5. Step 5: Solve for x
    x = 361,816,043,154.01/630,975.72
  6. Step 6: Final answer
    x = 573,423.08

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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.