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Finding the Fourth Proportional to 680,804.56, 939,536 and 374,894.32

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Solution

The fourth proportional to 680,804.56, 939,536 and 374,894.32 is: 517,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,804.56 : 939,536 = 374,894.32 : x
  2. Step 2: Convert to fraction form
    680,804.56/939,536 = 374,894.32/x
  3. Step 3: Cross multiply
    680,804.56x = 939,536 × 374,894.32
  4. Step 4: Simplify right side
    680,804.56x = 352,226,709,835.52
  5. Step 5: Solve for x
    x = 352,226,709,835.52/680,804.56
  6. Step 6: Final answer
    x = 517,368.32

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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.