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Finding the Fourth Proportional to 628,848.26, 867,810.72 and 342,368.36

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Solution

The fourth proportional to 628,848.26, 867,810.72 and 342,368.36 is: 472,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,848.26 : 867,810.72 = 342,368.36 : x
  2. Step 2: Convert to fraction form
    628,848.26/867,810.72 = 342,368.36/x
  3. Step 3: Cross multiply
    628,848.26x = 867,810.72 × 342,368.36
  4. Step 4: Simplify right side
    628,848.26x = 297,110,932,996.82
  5. Step 5: Solve for x
    x = 297,110,932,996.82/628,848.26
  6. Step 6: Final answer
    x = 472,468.40

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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.