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Finding the Fourth Proportional to 673,967.18, 930,090.40 and 368,045.67

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Solution

The fourth proportional to 673,967.18, 930,090.40 and 368,045.67 is: 507,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,967.18 : 930,090.40 = 368,045.67 : x
  2. Step 2: Convert to fraction form
    673,967.18/930,090.40 = 368,045.67/x
  3. Step 3: Cross multiply
    673,967.18x = 930,090.40 × 368,045.67
  4. Step 4: Simplify right side
    673,967.18x = 342,315,746,996.29
  5. Step 5: Solve for x
    x = 342,315,746,996.29/673,967.18
  6. Step 6: Final answer
    x = 507,911.60

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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.