Home / 629,228.79-943,478.69-429,790.19

Finding the Fourth Proportional to 629,228.79, 943,478.69 and 429,790.19

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Solution

The fourth proportional to 629,228.79, 943,478.69 and 429,790.19 is: 644,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,228.79 : 943,478.69 = 429,790.19 : x
  2. Step 2: Convert to fraction form
    629,228.79/943,478.69 = 429,790.19/x
  3. Step 3: Cross multiply
    629,228.79x = 943,478.69 × 429,790.19
  4. Step 4: Simplify right side
    629,228.79x = 405,497,878,569.71
  5. Step 5: Solve for x
    x = 405,497,878,569.71/629,228.79
  6. Step 6: Final answer
    x = 644,436.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.