Home / 745,271.10-1,117,967.40-318,810.15

Finding the Fourth Proportional to 745,271.10, 1,117,967.40 and 318,810.15

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Solution

The fourth proportional to 745,271.10, 1,117,967.40 and 318,810.15 is: 478,241.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,271.10 : 1,117,967.40 = 318,810.15 : x
  2. Step 2: Convert to fraction form
    745,271.10/1,117,967.40 = 318,810.15/x
  3. Step 3: Cross multiply
    745,271.10x = 1,117,967.40 × 318,810.15
  4. Step 4: Simplify right side
    745,271.10x = 356,419,354,489.11
  5. Step 5: Solve for x
    x = 356,419,354,489.11/745,271.10
  6. Step 6: Final answer
    x = 478,241.21

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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.