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Finding the Fourth Proportional to 626,782.19, 864,959.37 and 340,302.30

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Solution

The fourth proportional to 626,782.19, 864,959.37 and 340,302.30 is: 469,617.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,782.19 : 864,959.37 = 340,302.30 : x
  2. Step 2: Convert to fraction form
    626,782.19/864,959.37 = 340,302.30/x
  3. Step 3: Cross multiply
    626,782.19x = 864,959.37 × 340,302.30
  4. Step 4: Simplify right side
    626,782.19x = 294,347,663,017.55
  5. Step 5: Solve for x
    x = 294,347,663,017.55/626,782.19
  6. Step 6: Final answer
    x = 469,617.15

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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.