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Finding the Fourth Proportional to 902,178, 1,245,005.64 and 539,617.14

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Solution

The fourth proportional to 902,178, 1,245,005.64 and 539,617.14 is: 744,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,178 : 1,245,005.64 = 539,617.14 : x
  2. Step 2: Convert to fraction form
    902,178/1,245,005.64 = 539,617.14/x
  3. Step 3: Cross multiply
    902,178x = 1,245,005.64 × 539,617.14
  4. Step 4: Simplify right side
    902,178x = 671,826,382,740.67
  5. Step 5: Solve for x
    x = 671,826,382,740.67/902,178
  6. Step 6: Final answer
    x = 744,671.65

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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.