Home / 498,569,856,729.42-688,364,144,456.49-315,829,124,489.10

Finding the Fourth Proportional to 498,569,856,729.42, 688,364,144,456.49 and 315,829,124,489.10

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Solution

The fourth proportional to 498,569,856,729.42, 688,364,144,456.49 and 315,829,124,489.10 is: 436,058,141,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,569,856,729.42 : 688,364,144,456.49 = 315,829,124,489.10 : x
  2. Step 2: Convert to fraction form
    498,569,856,729.42/688,364,144,456.49 = 315,829,124,489.10/x
  3. Step 3: Cross multiply
    498,569,856,729.42x = 688,364,144,456.49 × 315,829,124,489.10
  4. Step 4: Simplify right side
    498,569,856,729.42x = 217,405,445,073,381,565,136,896
  5. Step 5: Solve for x
    x = 217,405,445,073,381,565,136,896/498,569,856,729.42
  6. Step 6: Final answer
    x = 436,058,141,379.72

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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.