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Finding the Fourth Proportional to 761,416.32, 1,051,232.31 and 489,955.98

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Solution

The fourth proportional to 761,416.32, 1,051,232.31 and 489,955.98 is: 676,446.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,416.32 : 1,051,232.31 = 489,955.98 : x
  2. Step 2: Convert to fraction form
    761,416.32/1,051,232.31 = 489,955.98/x
  3. Step 3: Cross multiply
    761,416.32x = 1,051,232.31 × 489,955.98
  4. Step 4: Simplify right side
    761,416.32x = 515,057,560,595.84
  5. Step 5: Solve for x
    x = 515,057,560,595.84/761,416.32
  6. Step 6: Final answer
    x = 676,446.70

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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.