Home / 434,511.80-651,249.30-389,929.40

Finding the Fourth Proportional to 434,511.80, 651,249.30 and 389,929.40

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Solution

The fourth proportional to 434,511.80, 651,249.30 and 389,929.40 is: 584,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,511.80 : 651,249.30 = 389,929.40 : x
  2. Step 2: Convert to fraction form
    434,511.80/651,249.30 = 389,929.40/x
  3. Step 3: Cross multiply
    434,511.80x = 651,249.30 × 389,929.40
  4. Step 4: Simplify right side
    434,511.80x = 253,941,248,799.42
  5. Step 5: Solve for x
    x = 253,941,248,799.42/434,511.80
  6. Step 6: Final answer
    x = 584,428.89

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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.