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Finding the Fourth Proportional to 717,051.24, 989,602.20 and 535,447.89

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Solution

The fourth proportional to 717,051.24, 989,602.20 and 535,447.89 is: 738,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,051.24 : 989,602.20 = 535,447.89 : x
  2. Step 2: Convert to fraction form
    717,051.24/989,602.20 = 535,447.89/x
  3. Step 3: Cross multiply
    717,051.24x = 989,602.20 × 535,447.89
  4. Step 4: Simplify right side
    717,051.24x = 529,880,409,929.36
  5. Step 5: Solve for x
    x = 529,880,409,929.36/717,051.24
  6. Step 6: Final answer
    x = 738,971.47

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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.