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Finding the Fourth Proportional to 644,407.52, 889,605.60 and 402,824.48

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Solution

The fourth proportional to 644,407.52, 889,605.60 and 402,824.48 is: 556,099.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,407.52 : 889,605.60 = 402,824.48 : x
  2. Step 2: Convert to fraction form
    644,407.52/889,605.60 = 402,824.48/x
  3. Step 3: Cross multiply
    644,407.52x = 889,605.60 × 402,824.48
  4. Step 4: Simplify right side
    644,407.52x = 358,354,913,225.09
  5. Step 5: Solve for x
    x = 358,354,913,225.09/644,407.52
  6. Step 6: Final answer
    x = 556,099.83

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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.