Home / 829,401.30-1,243,117.80-429,836.40

Finding the Fourth Proportional to 829,401.30, 1,243,117.80 and 429,836.40

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Solution

The fourth proportional to 829,401.30, 1,243,117.80 and 429,836.40 is: 644,244.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,401.30 : 1,243,117.80 = 429,836.40 : x
  2. Step 2: Convert to fraction form
    829,401.30/1,243,117.80 = 429,836.40/x
  3. Step 3: Cross multiply
    829,401.30x = 1,243,117.80 × 429,836.40
  4. Step 4: Simplify right side
    829,401.30x = 534,337,279,927.92
  5. Step 5: Solve for x
    x = 534,337,279,927.92/829,401.30
  6. Step 6: Final answer
    x = 644,244.57

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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.