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Finding the Fourth Proportional to 630,403.58, 869,952.81 and 358,471.52

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Solution

The fourth proportional to 630,403.58, 869,952.81 and 358,471.52 is: 494,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,403.58 : 869,952.81 = 358,471.52 : x
  2. Step 2: Convert to fraction form
    630,403.58/869,952.81 = 358,471.52/x
  3. Step 3: Cross multiply
    630,403.58x = 869,952.81 × 358,471.52
  4. Step 4: Simplify right side
    630,403.58x = 311,853,306,128.97
  5. Step 5: Solve for x
    x = 311,853,306,128.97/630,403.58
  6. Step 6: Final answer
    x = 494,688.35

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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.