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Finding the Fourth Proportional to 653,075.70, 978,301.35 and 372,264.90

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Solution

The fourth proportional to 653,075.70, 978,301.35 and 372,264.90 is: 557,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,075.70 : 978,301.35 = 372,264.90 : x
  2. Step 2: Convert to fraction form
    653,075.70/978,301.35 = 372,264.90/x
  3. Step 3: Cross multiply
    653,075.70x = 978,301.35 × 372,264.90
  4. Step 4: Simplify right side
    653,075.70x = 364,187,254,227.62
  5. Step 5: Solve for x
    x = 364,187,254,227.62/653,075.70
  6. Step 6: Final answer
    x = 557,649.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.