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Finding the Fourth Proportional to 716,946.06, 989,377.92 and 394,649.40

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Solution

The fourth proportional to 716,946.06, 989,377.92 and 394,649.40 is: 544,611.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,946.06 : 989,377.92 = 394,649.40 : x
  2. Step 2: Convert to fraction form
    716,946.06/989,377.92 = 394,649.40/x
  3. Step 3: Cross multiply
    716,946.06x = 989,377.92 × 394,649.40
  4. Step 4: Simplify right side
    716,946.06x = 390,457,402,501.25
  5. Step 5: Solve for x
    x = 390,457,402,501.25/716,946.06
  6. Step 6: Final answer
    x = 544,611.96

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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.