Home / 674,931.84-931,640.50-388,566.06

Finding the Fourth Proportional to 674,931.84, 931,640.50 and 388,566.06

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Solution

The fourth proportional to 674,931.84, 931,640.50 and 388,566.06 is: 536,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,931.84 : 931,640.50 = 388,566.06 : x
  2. Step 2: Convert to fraction form
    674,931.84/931,640.50 = 388,566.06/x
  3. Step 3: Cross multiply
    674,931.84x = 931,640.50 × 388,566.06
  4. Step 4: Simplify right side
    674,931.84x = 362,003,878,421.43
  5. Step 5: Solve for x
    x = 362,003,878,421.43/674,931.84
  6. Step 6: Final answer
    x = 536,356.20

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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.