Home / 690,126.55-1,035,196.37-430,543.01

Finding the Fourth Proportional to 690,126.55, 1,035,196.37 and 430,543.01

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Solution

The fourth proportional to 690,126.55, 1,035,196.37 and 430,543.01 is: 645,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,126.55 : 1,035,196.37 = 430,543.01 : x
  2. Step 2: Convert to fraction form
    690,126.55/1,035,196.37 = 430,543.01/x
  3. Step 3: Cross multiply
    690,126.55x = 1,035,196.37 × 430,543.01
  4. Step 4: Simplify right side
    690,126.55x = 445,696,563,130.69
  5. Step 5: Solve for x
    x = 445,696,563,130.69/690,126.55
  6. Step 6: Final answer
    x = 645,818.60

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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.