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Finding the Fourth Proportional to 612,368.80, 845,481.32 and 547,637.20

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Solution

The fourth proportional to 612,368.80, 845,481.32 and 547,637.20 is: 756,108.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,368.80 : 845,481.32 = 547,637.20 : x
  2. Step 2: Convert to fraction form
    612,368.80/845,481.32 = 547,637.20/x
  3. Step 3: Cross multiply
    612,368.80x = 845,481.32 × 547,637.20
  4. Step 4: Simplify right side
    612,368.80x = 463,017,019,968.89
  5. Step 5: Solve for x
    x = 463,017,019,968.89/612,368.80
  6. Step 6: Final answer
    x = 756,108.12

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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.