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Finding the Fourth Proportional to 621,729.96, 858,018.92 and 367,075.68

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Solution

The fourth proportional to 621,729.96, 858,018.92 and 367,075.68 is: 506,583.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,729.96 : 858,018.92 = 367,075.68 : x
  2. Step 2: Convert to fraction form
    621,729.96/858,018.92 = 367,075.68/x
  3. Step 3: Cross multiply
    621,729.96x = 858,018.92 × 367,075.68
  4. Step 4: Simplify right side
    621,729.96x = 314,957,878,511.87
  5. Step 5: Solve for x
    x = 314,957,878,511.87/621,729.96
  6. Step 6: Final answer
    x = 506,583.08

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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.