Home / 690,838.03-953,318.45-380,679.53

Finding the Fourth Proportional to 690,838.03, 953,318.45 and 380,679.53

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Solution

The fourth proportional to 690,838.03, 953,318.45 and 380,679.53 is: 525,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,838.03 : 953,318.45 = 380,679.53 : x
  2. Step 2: Convert to fraction form
    690,838.03/953,318.45 = 380,679.53/x
  3. Step 3: Cross multiply
    690,838.03x = 953,318.45 × 380,679.53
  4. Step 4: Simplify right side
    690,838.03x = 362,908,817,582.93
  5. Step 5: Solve for x
    x = 362,908,817,582.93/690,838.03
  6. Step 6: Final answer
    x = 525,316.80

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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.