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Finding the Fourth Proportional to 630,527.83, 870,147.50 and 358,634.79

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Solution

The fourth proportional to 630,527.83, 870,147.50 and 358,634.79 is: 494,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,527.83 : 870,147.50 = 358,634.79 : x
  2. Step 2: Convert to fraction form
    630,527.83/870,147.50 = 358,634.79/x
  3. Step 3: Cross multiply
    630,527.83x = 870,147.50 × 358,634.79
  4. Step 4: Simplify right side
    630,527.83x = 312,065,164,138.35
  5. Step 5: Solve for x
    x = 312,065,164,138.35/630,527.83
  6. Step 6: Final answer
    x = 494,926.87

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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.