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Finding the Fourth Proportional to 629,925.71, 869,319.35 and 358,005.07

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Solution

The fourth proportional to 629,925.71, 869,319.35 and 358,005.07 is: 494,059.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,925.71 : 869,319.35 = 358,005.07 : x
  2. Step 2: Convert to fraction form
    629,925.71/869,319.35 = 358,005.07/x
  3. Step 3: Cross multiply
    629,925.71x = 869,319.35 × 358,005.07
  4. Step 4: Simplify right side
    629,925.71x = 311,220,734,749.11
  5. Step 5: Solve for x
    x = 311,220,734,749.11/629,925.71
  6. Step 6: Final answer
    x = 494,059.43

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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.