Home / 690,837.53-953,317.76-380,679.03

Finding the Fourth Proportional to 690,837.53, 953,317.76 and 380,679.03

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Solution

The fourth proportional to 690,837.53, 953,317.76 and 380,679.03 is: 525,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,837.53 : 953,317.76 = 380,679.03 : x
  2. Step 2: Convert to fraction form
    690,837.53/953,317.76 = 380,679.03/x
  3. Step 3: Cross multiply
    690,837.53x = 953,317.76 × 380,679.03
  4. Step 4: Simplify right side
    690,837.53x = 362,908,078,255.18
  5. Step 5: Solve for x
    x = 362,908,078,255.18/690,837.53
  6. Step 6: Final answer
    x = 525,316.11

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1.5x scale

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.