Home / 626,421.12-864,461.70-339,941.22

Finding the Fourth Proportional to 626,421.12, 864,461.70 and 339,941.22

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Solution

The fourth proportional to 626,421.12, 864,461.70 and 339,941.22 is: 469,119.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,421.12 : 864,461.70 = 339,941.22 : x
  2. Step 2: Convert to fraction form
    626,421.12/864,461.70 = 339,941.22/x
  3. Step 3: Cross multiply
    626,421.12x = 864,461.70 × 339,941.22
  4. Step 4: Simplify right side
    626,421.12x = 293,866,164,941.27
  5. Step 5: Solve for x
    x = 293,866,164,941.27/626,421.12
  6. Step 6: Final answer
    x = 469,119.18

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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.