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Finding the Fourth Proportional to 716,852.77, 989,248.98 and 394,555.96

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Solution

The fourth proportional to 716,852.77, 989,248.98 and 394,555.96 is: 544,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,852.77 : 989,248.98 = 394,555.96 : x
  2. Step 2: Convert to fraction form
    716,852.77/989,248.98 = 394,555.96/x
  3. Step 3: Cross multiply
    716,852.77x = 989,248.98 × 394,555.96
  4. Step 4: Simplify right side
    716,852.77x = 390,314,083,699.07
  5. Step 5: Solve for x
    x = 390,314,083,699.07/716,852.77
  6. Step 6: Final answer
    x = 544,482.91

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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.