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Finding the Fourth Proportional to 717,225.18, 989,777.22 and 394,946.70

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Solution

The fourth proportional to 717,225.18, 989,777.22 and 394,946.70 is: 545,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,225.18 : 989,777.22 = 394,946.70 : x
  2. Step 2: Convert to fraction form
    717,225.18/989,777.22 = 394,946.70/x
  3. Step 3: Cross multiply
    717,225.18x = 989,777.22 × 394,946.70
  4. Step 4: Simplify right side
    717,225.18x = 390,909,246,774.17
  5. Step 5: Solve for x
    x = 390,909,246,774.17/717,225.18
  6. Step 6: Final answer
    x = 545,030.01

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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.