Home / 680,158.40-1,020,237.60-638,686.40

Finding the Fourth Proportional to 680,158.40, 1,020,237.60 and 638,686.40

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Solution

The fourth proportional to 680,158.40, 1,020,237.60 and 638,686.40 is: 958,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,158.40 : 1,020,237.60 = 638,686.40 : x
  2. Step 2: Convert to fraction form
    680,158.40/1,020,237.60 = 638,686.40/x
  3. Step 3: Cross multiply
    680,158.40x = 1,020,237.60 × 638,686.40
  4. Step 4: Simplify right side
    680,158.40x = 651,611,879,888.64
  5. Step 5: Solve for x
    x = 651,611,879,888.64/680,158.40
  6. Step 6: Final answer
    x = 958,029.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.