Home / 645,735.52-890,743.93-403,597.86

Finding the Fourth Proportional to 645,735.52, 890,743.93 and 403,597.86

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Solution

The fourth proportional to 645,735.52, 890,743.93 and 403,597.86 is: 556,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,735.52 : 890,743.93 = 403,597.86 : x
  2. Step 2: Convert to fraction form
    645,735.52/890,743.93 = 403,597.86/x
  3. Step 3: Cross multiply
    645,735.52x = 890,743.93 × 403,597.86
  4. Step 4: Simplify right side
    645,735.52x = 359,502,343,955.99
  5. Step 5: Solve for x
    x = 359,502,343,955.99/645,735.52
  6. Step 6: Final answer
    x = 556,733.11

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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.