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Finding the Fourth Proportional to 704,075.24, 971,622.60 and 393,978.08

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Solution

The fourth proportional to 704,075.24, 971,622.60 and 393,978.08 is: 543,689.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,075.24 : 971,622.60 = 393,978.08 : x
  2. Step 2: Convert to fraction form
    704,075.24/971,622.60 = 393,978.08/x
  3. Step 3: Cross multiply
    704,075.24x = 971,622.60 × 393,978.08
  4. Step 4: Simplify right side
    704,075.24x = 382,798,006,432.61
  5. Step 5: Solve for x
    x = 382,798,006,432.61/704,075.24
  6. Step 6: Final answer
    x = 543,689.06

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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.